Caitlyn Jenner is getting another grandchild - find out who's expecting!

Before you go, we thought you'd like these...
Caitlyn Jenner Expecting Another Grandchild-Find Out Who's Pregnant!


Caitlyn Jenner's family is getting bigger!

The 66-year-old former Olympian has another grandson on the way, after her son, Burt Jenner, 37, announced that he and his wife are expecting on Instagram Thursday, writing, "I promised to wait until we had the "all healthy" update , and we got it yesterday... My Lil boy, just chillin... So happy I can't see straight, he can't get here fast enough... Who wants to fab me a stroller with @kingshocks and @gladiatortires like you see at the 1000 every year?."

In addition to Saint West earlier this month, Caitlyn received a grandchild from her son, Brandon Jenner, when Eva James was born in July.

In October, Burt revealed how he and Caitlyn have bonded "more now than ever" in the wake of her transition.

WATCH: Caitlyn Jenner Says Her 'Biggest' Holiday Tradition Is Kris' 'Over-the-Top' Christmas Eve Party

"There's been some trade-offs, I'll admit that," Burt told Australia's Today show. "But she is a better person. Honesty is always the building block for any relationship, and at least we have that now."

Burt's baby announcement is obviously good news on this Christmas Eve, a day that Caitlyn is already so high on due to Kris Jenner's holiday soiree.

See more photos of Caitlyn Jenner:

25 PHOTOS
Caitlyn Jenner out and about
See Gallery
Caitlyn Jenner is getting another grandchild - find out who's expecting!
BEVERLY HILLS, CA - FEBRUARY 28: TV personality Caitlyn Jenner arrives at the 2016 Vanity Fair Oscar Party Hosted By Graydon Carter at Wallis Annenberg Center for the Performing Arts on February 28, 2016 in Beverly Hills, California. (Photo by John Shearer/Getty Images)
BEVERLY HILLS, CA - FEBRUARY 14: Chris Rock, A. J. Calloway and Caitlyn Jenner attend the 2016 Pre-GRAMMY Gala and Salute to Industry Icons honoring Irving Azoff at The Beverly Hilton Hotel on February 14, 2016 in Beverly Hills, California. (Photo by Kevin Mazur/WireImage)
NEW YORK, NY - FEBRUARY 10: Caitlyn Jenner is seen on February 10, 2016 in New York City. (Photo by Ignat/Bauer-Griffin/GC Images)
NEW YORK, NY - FEBRUARY 09: Caitlyn Jenner is seen on the streets of Manhattan on February 9, 2016 in New York City. (Photo by Michael Stewart/GC Images)
RANCHO PALOS VERDES, CA - FEBRUARY 02: Executive Producer Caitlyn Jenner speaks at the AOL 2016 MAKERS conference at Terranea Resort on February 2, 2016 in Rancho Palos Verdes, California. (Photo by Alberto E. Rodriguez/Getty Images)
PASADENA, CA - JANUARY 14: Tv personality Candis Cayne (L) and executive producer/tv personality Caitlyn Jenner speak onstage during the 'I Am Cait' panel discussion at the NBCUniversal portion of the 2016 Winter TCA Tour at Langham Hotel on January 14, 2016 in Pasadena, California. (Photo by Frederick M. Brown/Getty Images)
LOS ANGELES, CA - JANUARY 04: Caitlyn Jenner Hosts Special Screening Of 'Tangerine' at Landmark Nuart Theatre on January 4, 2016 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
Caitlyn Jenner speaks to the Chicago House luncheon at the Hilton Chicago on Thursday, Nov. 12, 2015. (Nancy Stone/Chicago Tribune/TNS via Getty Images)
NEW YORK, NY - NOVEMBER 09: Olympic gold medalist Caitlyn Jenner attends Glamour's 25th Anniversary Women Of The Year Awards at Carnegie Hall on November 9, 2015 in New York City. (Photo by Taylor Hill/Getty Images)
NEW YORK - NOVEMBER 08: Caitlyn Jenner seen at the Soho House for dinner on November 08, 2015 in New York, New York. (Photo by Josiah Kamau/BuzzFoto via Getty Images)
NEW YORK, NY - NOVEMBER 08: Caitlyn Jenner seen leaving 'Therese Raquin' on Broadway in Midtown on November 8, 2015 in New York City. (Photo by Robert Kamau/GC Images)
LOS ANGELES, CA - OCTOBER 27: Caitlyn Jenner attends Logo TV's 'Beautiful As I Want To Be' web series launch party at The Standard Hotel on October 27, 2015 in Los Angeles, California. (Photo by Tibrina Hobson/Getty Images)
LOS ANGELES, CA - OCTOBER 27: (L-R) Chandi Moore, Candis Cayne, Caitlyn Jenner and Geena Rocero attend Logo TV's 'Beautiful As I Want To Be' Web Series Launch Party at The Standard Hotel on October 27, 2015 in Los Angeles, California. (Photo by Gabriel Olsen/FilmMagic)
LOS ANGELES, CA - OCTOBER 27: Caitlyn Jenner attends Logo TV's 'Beautiful As I Want To Be' Web Series Launch Party at The Standard Hotel on October 27, 2015 in Los Angeles, California. (Photo by Gabriel Olsen/FilmMagic)
LOS ANGELES, CA - OCTOBER 03: TV personality and activist Caitlyn Jenner speaks onstage during the Point Foundation's Annual Voices On Point Gala at the Hyatt Regency Century Plaza on October 3, 2015 in Los Angeles, California. (Photo by Jason Kempin/Getty Images for The Point Foundation)
PACIFIC PALISADES, CA - SEPTEMBER 12: Caitlyn Jenner attends the 8th Annual Safety Harbor Kids Polo Classic Fundraiser at Will Rogers State Historic Park on September 12, 2015 in Pacific Palisades, California. (Photo by Michael Bezjian/Getty Images)
LOS ANGELES, CA - SEPTEMBER 03: Caitlyn Jenner is seen on September 03, 2015 in Los Angeles, California. (Photo by gotpap/Bauer-Griffin/GC Images)
LOS ANGELES, CA - JULY 24: (EXCLUSIVE COVERAGE) Caitlyn Jenner attends Culture Club's performance at the Greek Theatre on July 24, 2015 in Los Angeles, California. (Photo by Kevin Winter/Getty Images for Nederlander)
Photo by: Joel Mark/STAR MAX/IPx ©2015 7/16/15 Caitlyn Jenner at The Del Mar Thoroughbred Club. (Del Mar, CA)
LOS ANGELES, CA - JULY 24: Caitlyn Jenner introduces Boy George and Culture Club at The Greek Theatre on July 24, 2015 in Los Angeles, California. (Photo by Tibrina Hobson/WireImage)
Caitlyn Jenner accepts the Arthur Ashe award for courage at the ESPY Awards at the Microsoft Theater on Wednesday, July 15, 2015, in Los Angeles. (Photo by Chris Pizzello/Invision/AP)
NEW YORK, NY - JUNE 29: Caitlyn Jenner is seen in Tribeca on June 29, 2015 in New York City. (Photo by Alo Ceballos/GC Images)
NEW YORK, NY - JUNE 30: Caitlyn Jenner arrives at Patrica Field store in Soho on June 30, 2015 in New York City. (Photo by Raymond Hall/GC Images)
NEW YORK, NY - JUNE 30: Caitlyn Jenner is seen coming out of Patricia Field store in New York City on June 30, 2015 in New York City. (Photo by Raymond Hall/GC Images)
NEW YORK, NY - JUNE 30: Caitlyn Jenner is seen on June 30, 2015 in New York City. (Photo by NCP/Star Max/GC Images)
of
SEE ALL
BACK TO SLIDE
SHOW CAPTION +
HIDE CAPTION

PHOTOS: Holidays 2015: Stars Get in the Spirit

Watch Caitlyn rave about her estranged wife's "over-the-top" Christmas get-together below.

Read Full Story

People are Reading