Erin Foster on dad’s wedding to Katharine McPhee: 'There goes my inheritance'

The trolling continues! Katharine McPhee isn’t afraid to joke about her relationship with David Foster — and humor extends to her fiancé’s family as well.

The 69-year-old music producer’s daughter Erin Foster heard a rumor that her dad and the American Idol alum, 34, are planning to drop $50 million on their upcoming wedding. The Barely Famous alum, 36, posted a screenshot of blog about the speculation to her Instagram page on Tuesday, February 13, and cheekily captioned it, “There goes my inheritance.” Erin’s older sister Sara Foster quipped in the comments section, “Our inheritance was gone a long time ago FYI.”

The trolling continued when actor David Spade jumped in and added: “Nick [Jonas] and Priyanka [Chopra Jonas] have them beat with [a] 50 million day wedding.”

As always, McPhee was a good sport about her soon-to-be stepdaughter’s joke and replied to a commenter, “The gift bags are going to be insane.”

39 PHOTOS
Sara Foster and Erin Foster together
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Sara Foster and Erin Foster together
BILLBOARD MUSIC AWARDS -- Red Carpet Roaming -- 2019 BBMA at the MGM Grand, Las Vegas, Nevada -- Pictured: (l-r) Erin Foster, Sara Foster -- (Photo by: Christopher Polk/NBC/NBCU Photo Bank via Getty Images)
LAS VEGAS, NV - MAY 01: (L-R) Sara Foster and Erin Foster attend the 2019 Billboard Music Awards at MGM Grand Garden Arena on May 1, 2019 in Las Vegas, Nevada. (Photo by Emma McIntyre/Getty Images for dcp)
IRVINE, CALIFORNIA - MARCH 06: Sara Foster and Erin Foster attend Vital Proteins Collagen Water Product Launch Event on March 06, 2019 in Irvine, California. (Photo by Jerod Harris/Getty Images for Vital Proteins)
BEVERLY HILLS, CALIFORNIA - MARCH 04: Writer Erin Foster (L) and Actress Sara Foster (R) attend 27th Annual Alliance For Children's Rights dinner at The Beverly Hilton Hotel on March 04, 2019 in Beverly Hills, California. (Photo by Paul Archuleta/Getty Images)
BEVERLY HILLS, CALIFORNIA - FEBRUARY 28: (L-R) Erin Foster, Sara Foster attend The Women's Cancer Research Fund's An Unforgettable Evening Benefit Gala at the Beverly Wilshire Four Seasons Hotel on February 28, 2019 in Beverly Hills, California. (Photo by Frazer Harrison/Getty Images)
BEVERLY HILLS, CA - FEBRUARY 24: Sara Foster and Erin Foster attend the 2019 Vanity Fair Oscar Party hosted by Radhika Jones at Wallis Annenberg Center for the Performing Arts on February 24, 2019 in Beverly Hills, California. (Photo by John Shearer/Getty Images)
ASPEN, CO - FEBRUARY 04: Kelly Sawyer Patricof, Olivia Munn, Sara Foster, Simon Tikhman, Erin Foster and Jennifer Meyer attend the Frame and Bumble winter vacation Aspen store event on February 4, 2019 in Aspen, Colorado. (Photo by Riccardo S. Savi/Getty Images for Frame Denim)
BEVERLY HILLS, CA - JANUARY 28: (L-R) Sara Foster, Erin Foster and Derek Blasberg attend 2019 WSJ. Magazine Talents and Legends Dinner Honoring Lucas Hedges at Mr Chow on January 28, 2019 in Beverly Hills, California. (Photo by Stefanie Keenan/Getty Images for WSJ. Magazine)
BEVERLY HILLS, CA - JANUARY 28: Erin Foster (L) and Sara Foster attend 2019 WSJ. Magazine Talents and Legends Dinner Honoring Lucas Hedges at Mr Chow on January 28, 2019 in Beverly Hills, California. (Photo by Stefanie Keenan/Getty Images for WSJ. Magazine)
CULVER CITY, CA - NOVEMBER 10: Sara Foster, Erin Foster arrives at the The 2018 Baby2Baby Gala Presented By Paul Mitchell Event at 3LABS on November 10, 2018 in Culver City, California. (Photo by Steve Granitz/WireImage)
PACIFIC PALISADES, CA - NOVEMBER 28: Erin Foster (L) and Sara Foster attend the Rachel Zoe Resort Holiday Presentation at Rachel Zoe Boutique on November 28, 2018 in Pacific Palisades, California. (Photo by Donato Sardella/Getty Images for Rachel Zoe)
CULVER CITY, CA - OCTOBER 28: Erin Foster and Sara Foster attend The Elizabeth Glaser Pediatric AIDS Foundation's Annual 'A Time For Heroes' Family Festival at Smashbox Studios at Smashbox Studios on October 28, 2018 in Culver City, California. (Photo by Michael Kovac/Getty Images for Elizabeth Glaser Pediatric AIDS Foundation)
BURBANK, CA - OCTOBER 13: Erin Foster and Sara Foster arrive at FCancer's 1st Annual Barbara Berlanti Heroes Gala at Warner Bros. Studios on October 13, 2018 in Burbank, California. (Photo by Gregg DeGuire/WireImage)
PACIFIC PALISADES, CA - OCTOBER 17: Erin Foster (L) and Sara Foster attend Jennifer Meyer Celebrates First Store Opening in Palisades Village At The Draycott With Gwyneth Paltrow And Rick Caruso on October 17, 2018 in Pacific Palisades, California. (Photo by Charley Gallay/Getty Images for Jennifer Meyer Jewelry)
BURBANK, CA - OCTOBER 13: (L-R) Erin Foster, Rachel Zoe, Yael Cohen Braun, Sara Foster, Heather Parry and Jennifer Meyer attend the Barbara Berlanti Heroes Gala Benefitting FCancer at Warner Bros. Studios on October 13, 2018 in Burbank, California. (Photo by Emma McIntyre/Getty Images for FCancer)
BURBANK, CALIFORNIA - OCTOBER 13: Erin Foster (L) and Sara Foster attend FCancer's 1st Annual Barbara Berlanti Heroes Gala at Warner Bros. Studios on October 13, 2018 in Burbank, California. (Photo by David Livingston/Getty Images)
NEW YORK, NY - JUNE 09: (L-R) Erin Foster and Sara Foster speaks onstage on day 1 of POPSUGAR Play/Ground on June 9, 2018 in New York City. (Photo by Brian Ach/Getty Images for POPSUGAR Play/Ground)
NEW YORK, NY - MAY 18: Erin Foster and Sara Foster attend a panel discussion on power dressing with Bumble's Sara & Erin Foster and designer Andrea Lieberman hosted by Saks at Saks Fifth Avenue on May 18, 2018 in New York City. (Photo by Cindy Ord/Getty Images for Saks Fifth Avenue)
NEW YORK, NY - MAY 18: (L-R) Katharine McPhee, Erin Foster, and Sara Foster attend a panel discussion on power dressing with Bumble's Sara & Erin Foster and designer Andrea Lieberman hosted by Saks at Saks Fifth Avenue on May 18, 2018 in New York City. (Photo by Cindy Ord/Getty Images for Saks Fifth Avenue)
WEST HOLLYWOOD, CA - MAY 09: Erin Foster (L) and Sara Foster attend Aerin Lauder, Crystal Lourd and Jennifer Meyer Host a Dinner in Celebration of the AERIN SS18 Collection by Williams Sonoma at Sunset Tower Hotel on May 9, 2018 in West Hollywood, California. (Photo by Stefanie Keenan/Getty Images for AERIN)
PALM SPRINGS, CA - APRIL 13: Erin Foster, Rachel Zoe and Sara Foster attend Rachel Zoe's 4th Annual ZOEasis at Parker Palm Springs on April 13, 2018 in Palm Springs, California. (Photo by Michael Kovac/Getty Images for Belvedere Vodka)
BEVERLY HILLS, CA - MARCH 04: Erin Foster and Sara Foster attend the 2018 Vanity Fair Oscar Party hosted by Radhika Jones at the Wallis Annenberg Center for the Performing Arts on March 4, 2018 in Beverly Hills, California. (Photo by Taylor Hill/FilmMagic)
LOS ANGELES, CA - JANUARY 31: Erin Foster (L) and Sara Foster speak during Bumble Hive LA debut with Gwyneth Paltrow and friends on January 31, 2018 in Los Angeles, California. (Photo by Charley Gallay/Getty Images for Bumble )
PARK CITY, UT - JANUARY 20: Sara Foster and Erin Foster join the HBO and Live Nation Productions�Believer party in Caf�Artois during the Sundance Film Festival in Park City, Utah on Saturday, January 20, 2018.� (Photo by Phillip Faraone/Getty Images for Stella Artois )
MALIBU, CA - NOVEMBER 15: Erin Foster and Sara Foster attend Bumble Bizz Los Angeles Launch Dinner At Nobu Malibu at Nobu Malibu on November 15, 2017 in Malibu, California. (Photo by Charley Gallay/Getty Images for Bumble)
CULVER CITY, CA - NOVEMBER 11: Writer/performer Erin Foster (L) and model/actress Sara Foster attend the 2017 Baby2Baby Gala at 3Labs on November 11, 2017 in Culver City, California. (Photo by Jeffrey Mayer/WireImage)
WEST HOLLYWOOD, CA - NOVEMBER 09: Sara Foster (L) and Erin Foster attend the Launch of Words with Friends 2 hosted by Hilary and Haylie Duff at Norah Restaurant on November 9, 2017 in West Hollywood, California. (Photo by Rich Polk/Getty Images for Words with Friends 2 )
BEVERLY HILLS, CA - NOVEMBER 03: Erin Foster (L) and Sara Foster attend Goldie's Love In For Kids at Ron Burkle's Green Acres Estate on November 3, 2017 in Beverly Hills, California. (Photo by Frazer Harrison/Getty Images)
BEVERLY HILLS, CA - OCTOBER 11: Erin Foster;Sara Foster arrives at the What Goes Around Comes Around One Year Anniversary at What Goes Around Comes Around on October 11, 2017 in Beverly Hills, California. (Photo by Steve Granitz/WireImage)
BEVERLY HILLS, CA - SEPTEMBER 23: Writer Erin Foster (L) and actress Sara Foster arrive at the Los Angeles LGBT Center's 48th Anniversary Gala Vanguard Awards at The Beverly Hilton Hotel on September 23, 2017 in Beverly Hills, California. (Photo by Amanda Edwards/WireImage)
LOS ANGELES, CA - SEPTEMBER 04: Erin Foster and Sara Foster attend the Rachel Zoe Spring 2019 LA Presentation at Hotel Bel-Air on September 4, 2018 in Los Angeles, California. (Photo by David Livingston/Getty Images)
NEW YORK, NY - SEPTEMBER 05: Actress Sara Foster and Writer/Influencer Erin Foster attend as RH, Restoration Hardware celebrates the unveiling of RH New York at Restoration Hardware on September 5, 2018 in New York City. (Photo by Dimitrios Kambouris/Getty Images for RH)
NEW YORK, NY - JUNE 09: (L-R) Erin Foster and Sara Foster attend day 1 of POPSUGAR Play/Ground on June 9, 2018 in New York City. (Photo by Cindy Ord/Getty Images for POPSUGAR Play/Ground)
BURBANK, CALIFORNIA - OCTOBER 13: Erin Foster attends FCancer's 1st Annual Barbara Berlanti Heroes Gala at Warner Bros. Studios on October 13, 2018 in Burbank, California. (Photo by David Livingston/Getty Images)
LAS VEGAS, NV - SEPTEMBER 21: (EDITORIAL USE ONLY; NO COMMERCIAL USE) Erin Foster (L) and Sara Foster pose in the press room during the iHeartRadio Music Festival at T-Mobile Arena on September 21, 2018 in Las Vegas, Nevada. (Photo by David Becker/Getty Images for iHeartMedia)
LOS ANGELES, CA - SEPTEMBER 04: Erin Foster and Sara Foster attend the Rachel Zoe Spring 2019 LA Presentation at Hotel Bel-Air on September 4, 2018 in Los Angeles, California. (Photo by David Livingston/Getty Images)
LOS ANGELES, CA - SEPTEMBER 19: Actress Sara Foster, musician David Foster and writer Erin Foster attend the 2017 GRAMMY Museum Gala Honoring David Foster at The Novo by Microsoft on September 19, 2017 in Los Angeles, California. (Photo by Alison Buck/WireImage for The Recording Academy )
CULVER CITY, CA - NOVEMBER 12: Erin Foster, David Foster and Sara Foster attend the 5th Annual Baby2Baby Gala at 3LABS on November 12, 2016 in Culver City, California. (Photo by Stefanie Keenan/Getty Images for Baby2Baby)
WEST HOLLYWOOD, CA - JUNE 14: (L-R) Erin Foster, David Foster and Sara Foster arrive for the Premiere For VH1's 'Barely Famous' Season 2 at Soho House on June 14, 2016 in West Hollywood, California. (Photo by Gabriel Olsen/Getty Images)
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Earlier this month, the Daddy Issues creator told Us Weekly exclusively that the Broadway actress is “so funny.” However, Sara, 38, said that McPhee “holds her tongue [on social media] a lot.” She noted: “If I were her, I would be taking down trolls all day. I wouldn’t be able to star on Broadway because I’d be too busy taking down trolls. She’s really funny.”

The former Smash actress and the Canadian musician first sparked romance rumors when they were spotted getting cozy on a date in Malibu in May 2017. They went public with the relationship a year later at the Met Gala in New York City and Usconfirmed their engagement in July 2018.

A source told Us last month, “David and Katharine are leaning toward a small wedding,” but the details are still up in the air. “They haven’t done any major planning yet, or even set a date,” the insider added.

“[They are considering] a very small wedding in London for about 30 people,” a second source explained. “They both want to make it a very private, small event.”

32 PHOTOS
Katharine McPhee and David Foster from 2006 until now
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Katharine McPhee and David Foster from 2006 until now
WINDSOR, ENGLAND - JUNE 27: David Foster (L) and Katharine McPhee attend the Argento Ball for the Elton John AIDS Foundation in association with BVLGARI & Bob and Tamar Manoukian on June 27, 2018 in Windsor, England. (Photo by David M. Benett/Dave Benett/Getty Images for BVLGARI and EJAF)
WINDSOR, ENGLAND - JUNE 27: David Foster (L) and Katharine McPhee attend the Argento Ball for the Elton John AIDS Foundation in association with BVLGARI & Bob and Tamar Manoukian on June 27, 2018 in Windsor, England. (Photo by David M. Benett/Dave Benett/Getty Images for BVLGARI and EJAF)
NEW YORK, NY - JUNE 01: (EXCLUSIVE COVERAGE) David Foster and Katharine McPhee attend the 2018 Stars In The Alley celebrating the end of the Broadway 2017-2018 season on June 1, 2018 in New York City. (Photo by Bruce Glikas/FilmMagic)
NEW YORK, NY - MAY 07: David Foster and Katharine McPhee attend the Heavenly Bodies: Fashion & The Catholic Imagination Costume Institute Gala at The Metropolitan Museum of Art on May 7, 2018 in New York City. (Photo by Neilson Barnard/Getty Images)
NEW YORK, NY - MAY 07: Katharine McPhee and David Foster attend the Heavenly Bodies: Fashion & The Catholic Imagination Costume Institute Gala at The Metropolitan Museum of Art on May 7, 2018 in New York City. (Photo by Kevin Mazur/MG18/Getty Images for The Met Museum/Vogue)
NEW YORK, NY - APRIL 06: David Foster, Katharine Mcphee are seen in Tribeca on April 6, 2018 in New York City. (Photo by Alo Ceballos/GC Images)
WEST HOLLYWOOD, CA - MARCH 04: (L-R) David Foster, Katharine McPhee, Petra Nemcova and guest attend the 26th annual Elton John AIDS Foundation Academy Awards Viewing Party sponsored by Bulgari, celebrating EJAF and the 90th Academy Awards at The City of West Hollywood Park on March 4, 2018 in West Hollywood, California. (Photo by Michael Kovac/Getty Images for EJAF)
WEST HOLLYWOOD, CA - MARCH 04: (L-R) ---, Lionel Richie, Lisa Parigi, Katharine McPhee, and David Foster attend the 26th annual Elton John AIDS Foundation Academy Awards Viewing Party sponsored by Bulgari, celebrating EJAF and the 90th Academy Awards at The City of West Hollywood Park on March 4, 2018 in West Hollywood, California. (Photo by Dimitrios Kambouris/Getty Images for EJAF)
WEST HOLLYWOOD, CA - MARCH 04: David Foster (L) and Katharine McPhee attend the 26th annual Elton John AIDS Foundation Academy Awards Viewing Party at The City of West Hollywood Park on March 4, 2018 in West Hollywood, California. (Photo by John Sciulli/Getty Images for Perry Ellis)
CARPINTERIA, CA - FEBRUARY 25: Musicians Katharine McPhee (L) and David Foster (R) perform onstage during the One 805 Kick Ash Bash benefiting First Responders at Bella Vista Ranch & Polo Club on February 25, 2018 in Carpinteria, California. (Photo by Scott Dudelson/Getty Images)
LOS ANGELES, CA - MARCH 04: Katharine McPhee (L) and David Foster attend Elton John AIDS Foundation 26th Annual Academy Awards Viewing Party at The City of West Hollywood Park on March 4, 2018 in Los Angeles, California. (Photo by Venturelli/Getty Images for Bulgari)
MALIBU, CA - NOVEMBER 15: David Foster and Katharine McPhee attend Bumble Bizz Los Angeles Launch Dinner At Nobu Malibu at Nobu Malibu on November 15, 2017 in Malibu, California. (Photo by Charley Gallay/Getty Images for Bumble)
MALIBU, CA - NOVEMBER 15: Kim Kardashian, David Foster and Katharine McPhee attend Bumble Bizz Los Angeles Launch Dinner At Nobu Malibu at Nobu Malibu on November 15, 2017 in Malibu, California. (Photo by Charley Gallay/Getty Images for Bumble)
BEVERLY HILLS, CA - NOVEMBER 09: (L-R) Honoree Lionel Richie, Lisa Parigi, Katharine McPhee, and David Foster attend the SAG-AFTRA Foundation Patron of the Artists Awards 2017 at the Wallis Annenberg Center for the Performing Arts on November 9, 2017 in Beverly Hills, California. (Photo by Matt Winkelmeyer/Getty Images for SAG-AFTRA Foundation )
BEVERLY HILLS, CA - NOVEMBER 09: (L-R) Honoree Lionel Richie, Lisa Parigi, Katharine McPhee, and David Foster attend the SAG-AFTRA Foundation Patron of the Artists Awards 2017 at the Wallis Annenberg Center for the Performing Arts on November 9, 2017 in Beverly Hills, California. (Photo by Matt Winkelmeyer/Getty Images for SAG-AFTRA Foundation)
LOS ANGELES, CA - NOVEMBER 05: David Foster and Katharine McPhee attend a basketball game between the Los Angeles Lakers and the Memphis Grizzlies at Staples Center on November 5, 2017 in Los Angeles, California. (Photo by Allen Berezovsky/Getty Images)
LOS ANGELES, CA - NOVEMBER 05: David Foster and Katharine McPhee attend a basketball game between the Los Angeles Lakers and the Memphis Grizzlies at Staples Center on November 5, 2017 in Los Angeles, California. (Photo by Allen Berezovsky/Getty Images)
LOS ANGELES, CA - NOVEMBER 05: David Foster and Katharine McPhee attend a basketball game between the Los Angeles Lakers and the Memphis Grizzlies at Staples Center on November 5, 2017 in Los Angeles, California. (Photo by Allen Berezovsky/Getty Images)
LOS ANGELES, CA - NOVEMBER 05: David Foster and Katharine McPhee attend a basketball game between the Los Angeles Lakers and the Memphis Grizzlies at Staples Center on November 5, 2017 in Los Angeles, California. (Photo by Allen Berezovsky/Getty Images)
LOS ANGELES, CA - NOVEMBER 5: David Foster and Katharine McPhee attend the Los Angeles Lakers vs. Memphis Grizzlies basketball game at Staples Center on November 5 2017, in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)
LOS ANGELES, CA - NOVEMBER 05: David Foster and Katharine McPhee attend a basketball game between the Los Angeles Lakers and the Memphis Grizzlies at Staples Center on November 5, 2017 in Los Angeles, California. (Photo by Allen Berezovsky/Getty Images)
LOS ANGELES, CA - NOVEMBER 5: David Foster and Katharine McPhee attend the Los Angeles Lakers vs. Memphis Grizzlies basketball game at Staples Center on November 5 2017, in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)
MALIBU, CA - APRIL 24: (Exclusive Coverage) Katharine McPhee and David Foster attend Barbra Streisand's 75th birthday at Cafe Habana on April 24, 2017 in Malibu, California. (Photo by Kevin Mazur/WireImage)
VANCOUVER, BC - OCTOBER 21: (L-R) David Foster and Katharine McPhee attend the David Foster Foundation Gala at Rogers Arena on October 21, 2017 in Vancouver, Canada. (Photo by Andrew Chin/Getty Images)
LOS ANGELES, CA - SEPTEMBER 19: David Foster and Katharine McPhee backstage during the 2017 GRAMMY Museum Gala Honoring David Foster at The Novo by Microsoft on September 19, 2017 in Los Angeles, California. (Photo by Alison Buck/WireImage for The Recording Academy )
VANCOUVER, BC - OCTOBER 21: (L-R) Katharine McPhee and David Foster attend the David Foster Foundation Gala at Rogers Arena on October 21, 2017 in Vancouver, Canada. (Photo by Andrew Chin/Getty Images)
LOS ANGELES, CA - SEPTEMBER 19: Musician David Foster and actress/singer Katharine McPhee attend the 2017 GRAMMY Museum Gala Honoring David Foster at The Novo by Microsoft on September 19, 2017 in Los Angeles, California. (Photo by Alison Buck/WireImage for The Recording Academy )
Producer David Foster and singer/songwriter Katharine McPhee attend the Jane Seymour Open Hearts Foundation Inaugural Celebration at a Private Residence on February 19, 2011 in Malibu, California. (Photo by Angela Weiss/WireImage)
WASHINGTON - NOVEMBER 16: Music producer David Foster and Katharine McPhee at the 'Kaleidoscope' rehearsal presented by sanofi-aventis US airing nationally on Thanksgiving Day on FOX at Verizon Center on November 16, 2009 in Washington, DC. (Photo by Paul Morigi/Getty Images for Edge Health)
David Foster, Katharine McPhee and guest during Mercedes-Benz Presents the 17th Carousel of Hope Ball - Backstage and Audience at Beverly Hills Hilton in Beverly Hills, California, United States. (Photo by M. Caulfield/WireImage)
Katharine McPhee and David Foster during JCPenney Jam Press Conference - June 13, 2006 at Shrine Auditorium in Los Angeles, California, United States. (Photo by Todd Williamson/FilmMagic)
'American Idol' Season 5 - David Foster, Andrea Bocelli, Top 6 Finalists, Katharine McPhee, 21, from Sherman Oaks, California, Paris Bennett, 17, from Fayettesville, Georgia, Kellie Pickler, 19, of Albemarle, North Carolina and Ryan Seacrest, host *EXCLUSIVE* ***Exclusive*** (Photo by Ray Mickshaw/WireImage for Fox Television Network)
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