The former pop star — who just announced that she’s writing her first book, a memoir — picked the perfect occasion to slip into a plunging, leopard-print bikini: her 39th birthday. Simpson celebrated her special day on July 10, treating fans to a glimpse of her postpartum curves and declaring, “39 is all mine!”
The mom of three was surrounded by several friends on her big day, but they weren’t the only ones cheering her on. Simpson’s fans were undeniably here for it.
Jessica Simpson and her kids
Jessica Simpson and her kids
My baby Maxwell is 5 years old today. She makes everyone's life mermaid magical. Happy Birthday to our fairytale princess. Mommy, Daddy, and Ace love you with our "holy hearts" (as Max would say) #MerMax #MAXIDREW #canyoube5forever
French toast sticks with sugar for Ace, duh! #BreakfastInBed #MAXIDREW
On pins and needles watching last week's Game of Thrones... just kidding, it's Moana 😉
I'm so in love #SisterAndBrother #MAXIDREW #ACEKNUTE
WACO, TX - MAY 06: (Exclusive Coverage) Eric Johnson, Ace Knute Johnson, Maxwell Drew Johnson and Jessica Simpson attend a spring style event benefitting The Boys and Girls Clubs of Waco, TX at at Dillard's on May 6, 2017 in Waco, Texas. (Photo by Kevin Mazur/Getty Images for Jessica Simpson Collection)
Wheels up to Waco! ✈️#wheelsandheels #MAXIDREW (Ace was too shy for the pic 😉)
Family Love 🐰🐣 📸: @kristingram
LOS ANGELES, CA - OCTOBER 24: Jessica Simpson and Maxwell Johnson attend the 2017 Princess Grace Awards Gala Kick Off Event on October 24, 2017 in Los Angeles, California. (Photo by JB Lacroix/ WireImage)
DALLAS, TX - NOVEMBER 22:Jessica Simpson, wearing Jessica Simpson Collection,(right) with Maxwell Drew Johnson, wearing Jessica Simpson Girls attend Jessica Simpson and Ashlee Simpson Ross come home for the holidays in support of the Jessica Simpson Collection and the launch of Jessica Simpson Home at Belk Galleria Dallas on November 22, 2014 in Dallas, Texas. (Photo by Jamie McCarthy/Getty Images for Jessica Simpson Collection)
LOS ANGELES, CA - SEPTEMBER 20: Jessica Simpson wearing Jessica Simpson Collection and Maxwell Drew Johnson (left) wearing Jessica Simpson Girls attend Jessica Simpson Collection Fashion Show at Nordstrom on September 20, 2014 in Los Angeles, California. (Photo by Jamie McCarthy/Getty Images for Jessica Simpson Collection)
NEW YORK, NY - DECEMBER 06: Jessica Simpson, Eric Johnson, Ace Knute, Maxwell are seen in Soho on December 6, 2013 in New York City. (Photo by Raymond Hall/FilmMagic)
LOS ANGELES, CA - APRIL 06: Jessica Simpson and Maxwell Johnson are seen on April 06, 2013 in Los Angeles, California. (Photo by Bauer-Griffin/GC Images)
CHARLOTTE, NC - MARCH 23: (L-R) Jessica Simpson, wearing Jessica Simpson Maternity, with her daughter Maxwell Johnson and Ashlee Simpson, wearing a Jessica Simpson dress, visit Belk Southpark on March 23, 2013 in Charlotte, North Carolina. (Photo by Jamie McCarthy/Getty Images for Jessica Simpson)
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“39 and just had a baby!” read one comment. “Dang you go with your bad self.”
“Looking great, mama!” added a well-wisher.
“Note to self: Look this good at 39,” wrote a commenter, while another hailed her as a “goddess.”
And of course, many couldn’t resist calling attention to the nursing mom’s post-baby cleavage, with one follower joking, “No more swollen ankles! Just swollen tatas!”
Mind you, Simpson’s never needed an excuse to break out the bikini. Just days before giving birth to Birdie, the heavily pregnant star was praised for “keeping it real” by showing off her bump in a two-piece.