Robin Thicke's girlfriend April Love Geary flaunts baby bump in teeny bikini

April Love Geary is ready to be a mommy!

The 22-year-old model took to Instagram over the weekend to show off her growing baby bump for the first time while wearing a teeny black bikini.

SEE ALSO: Melanie Griffith flashes thong, Carmen Electra wows at Cinefashion event in LA

Geary, who has been dating singer Robin Thicke since the spring of 2014, announced that she and her boyfriend, 40, were expecting back in August.

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In her baby bump debut this month, Geary wrote "already so in love with you" as she caressed her belly. The stunning star has clearly been staying in shape during her pregnancy, as she looks incredibly fit in the mirror selfie.

Geary's initial pregnancy announcement came in the form of a sonogram, which was dated August 14, 2017.

"Robin and I are very exited to share with you all that we're having a baby!" the post read. "The due date is March 1st, Alan's birthday!"

Alan, of course, is Robin's late father, who died last December after collapsing suddenly while playing hockey. The former "Growing Pains" actor's cause of death was later attributed to his aorta artery tearing and then rupturing.

Robin already shared a son, Julian, 7, with his ex-wife Paula Patton. The former couple, who split in February of 2014 after 10 years of marriage, were engaged in a bitter custody battle over their son, but their dispute has since been resolved.

See photos of Robin Thicke and Paula Patton together:

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Robin Thicke and Paula Patton together
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Robin Thicke and Paula Patton together
Paula Patton and Robin Thicke (Photo by Rodrigo Varela/WireImage)
Paula Patton and Robin Thicke (Photo by Djamilla Rosa Cochran/WireImage)
BEVERLY HILLS, CA - APRIL 23: Paula Patton and Robin Thicke attend BAPE Store Los Angeles Opening at BAPE Store on April 23, 2008 in Beverly Hills, CA. (Photo by ANDREAS BRANCH/Patrick McMullan via Getty Images)
Paula Patton and Robin Thicke, nominee Best R&B/Soul Album, Male for 'The Evolution of Robin Thicke'' (Photo by M. Phillips/WireImage)
Robin Thicke and Paula Patton (Photo by Dimitrios Kambouris/WireImage)
LAS VEGAS - SEPTEMBER 09: (l-r) Actress Paula Patton and singer Robin Thicke arrive at the 2007 MTV Video Music Awards held at The Palms Hotel and Casino on September 9, 2007 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images)
HOLLYWOOD - JULY 24: Actress Paula Patton and singer Robin Thicke arrive at the World Premiere of 'Swing Vote' at the El Capitan Theatre on July 24, 2008 in Hollywood, California. (Photo by Gregg DeGuire/WireImage)
NEW YORK CITY, NY - SEPTEMBER 9: Paula Patton and Robin Thicke attend PRADA Presents 'Fallen Shadows' at Prada Epicenter on September 9, 2008 in New York City. (Photo by DAVID X PRUTTING/Patrick McMullan via Getty Images)
NEW YORK - SEPTEMBER 23: Actress Paula Patton (L) and singer Robin Thicke (R)attend the Manhattan magazine premiere issue party at The Rainbow Room on September 23, 2008 in New York City. (Photo by Amy Sussman/Getty Images)
NEW YORK - SEPTEMBER 30: Paula Patton and Robin Thicke attend Robin Thicke's 'Something Else' album release party at the Rainbow Room on September 30, 2008 in New York City. (Photo by Dimitrios Kambouris/WireImage)
CENTURY CITY, CA - JUNE 12: Robin Thicke and Paula Patton attend the 2009 Crystal Lucy Awards held at the Hyatt Regency Century Plaza Hotel in Century City, California on June 12, 2009. (Photo by Gregg DeGuire/FilmMagic)
HOLLYWOOD - JUNE 17: Paula Patton and husband Robin Thicke at MyHouse Nightclub on June 17, 2009 in Hollywood, California. (Photo by Todd Williamson/WireImage)
LAS VEGAS - JUNE 19: Robin Thicke (R) and Paula Patton arrive at The Bank nightclub at Bellagio Las Vegas on June 19, 2009 in Las Vegas, Nevada. (Photo by Denise Truscello/WireImage)
Singer Robin Thicke and actress Paula Patton attend the 'Precious' Based On The Novel Push By Sapphire premiere at the Roy Thomson Hall during the 2009 Toronto International Film Festival on September 13, 2009 in Toronto, Canada. (Photo by George Pimentel/WireImage)
Actor Robin Thicke and Paula Patton arrive at the AFI premiere of Precious: Based on The Novel 'Push', held at Grauman's Chinese Theater. (Photo by Frank Trapper/Corbis via Getty Images)
MIAMI - DECEMBER 01: Paula Patton and Robin Thicke (R) attend the Roger Vivier boutique opening party at Bal Harbour Shops on December 1, 2009 in Miami, Florida. (Photo by Gustavo Caballero/WireImage)
LAS VEGAS - DECEMBER 31: Singer Robin Thicke and actress Paula Patton attend NYE hosted by Robin Thicke at The Bank Nightclub, Bellagio Hotel and Casino Resort on December 31, 2009 in Las Vegas, Nevada. (Photo by Jesse Grant/WireImage)
HOLLYWOOD - MARCH 07: Actress Paula Patton arrives with her husband singer Robin Thicke at the 82nd Annual Academy Awards held at Kodak Theatre on March 7, 2010 in Hollywood, California. (Photo by Frazer Harrison/Getty Images)
WEST HOLLYWOOD, CA - FEBRUARY 26: (EXCLUSIVE ACCESS SPECIAL RATES APPLY; NO NORTH AMERICAN ON-AIR BROADCAST UNTIL MARCH 1, 2012) Musician Robin Thicke and actress Paula Patton attend the 2012 Vanity Fair Oscar Party Hosted By Graydon Carter at Sunset Tower on February 26, 2012 in West Hollywood, California. (Photo by Jeff Vespa/VF12/WireImage)
WEST HOLLYWOOD, CA - JUNE 06: Actress Paula Patton and singer Robin Thicke attend the annual 'Celebrate Sundance Institute' Los Angeles benefit at Soho House on June 6, 2012 in West Hollywood, California. (Photo by Jason LaVeris/FilmMagic)
WEST HOLLYWOOD, CA - FEBRUARY 24: Actress Paula Patton and singer Robin Thicke attend the 2013 Vanity Fair Oscar party at Sunset Tower on February 24, 2013 in West Hollywood, California. (Photo by Jon Kopaloff/FilmMagic)
NEW YORK, NY - AUGUST 25: Musician Robin Thicke (L) and actress Paula Patton (Detail: Lever Couture dress, David Yurman jewels, Giuseppe Zanotti shoes)attend the 2013 MTV Video Music Awards at the Barclays Center on August 25, 2013 in the Brooklyn borough of New York City. (Photo by Dimitrios Kambouris/WireImage)
NEW YORK, NY - SEPTEMBER 04: (L-R) Paula Patton and Robin Thicke attend Robin Thicke's Album Release Party at No. 8 on September 4, 2013 in New York City. (Photo by Andrew Toth/WireImage)
LOS ANGELES, CA - SEPTEMBER 25: Actress Paula Patton (L) and recording artist Robin Thicke attend the premiere of Fox Searchlight Pictures' 'Baggage Claim' at the Regal Cinemas L.A. Live on September 25, 2013 in Los Angeles, California. (Photo by Frederick M. Brown/Getty Images)
NEW YORK, NY - OCTOBER 23: Singer Robin Thicke and actress Paula Patton walk the red carpet at the 2013 GQ Gentlemen's Ball presented by BMW i, Movado, and Nautica at IAC Building on October 23, 2013 in New York City. (Photo by Dimitrios Kambouris/Getty Images for GQ)
BEVERLY HILLS, CA - JANUARY 25: Actress Paula Patton (L) and recording artist Robin Thicke attend the 56th annual GRAMMY Awards Pre-GRAMMY Gala and Salute to Industry Icons honoring Lucian Grainge at The Beverly Hilton on January 25, 2014 in Beverly Hills, California. (Photo by Larry Busacca/Getty Images for NARAS)
LOS ANGELES, CA - JANUARY 26: Recording artist Robin Thicke (L) and actress Paula Patton attend the 56th GRAMMY Awards at Staples Center on January 26, 2014 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
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