Jessica Simpson flaunts 45kg weight loss six months after birth of third child

Former pop star and actor Jessica Simpson made sure to share the highs and lows of her most recent pregnancy - swollen ankles, acid reflux and all - with her near-five million-strong Instagram followers.

Now, six months after giving birth to her third child, daughter Birdie Mae, the new mum stepped out on Thursday to show off her 45kg weight loss.

‘I’m so proud’

The blonde beauty was spotted out and about in New York City sporting a tight-fitting black mini-dress that showed off her legs and cleavage.

Jessica allowed just a hint of her lacy black bra to peek out of the frock’s low-cut neckline, while the thigh-high split hinted at her slim pins.

She wore he locks straight and loose and kept her makeup look simple with a smokey eye and nude lip.

Jessica Simpson shows off 45kg weightloss. Photo: MEGA.
The blonde beauty was spotted out and about in New York City sporting a tight-fitting black mini-dress. Photo: MEGA.
Jessica Simpson shows off 45kg weightloss. Photo: MEGA.
Jessica wore her locks straight and loose and kept her makeup look simple with a smokey eye and nude lip. Photo: MEGA.

Jessica’s weightloss secrets

The 39-year-old proudly shared a photo of her slim post-baby body with her Instagram fans on Wednesday, revealing that she “tipped the scales” at just over 108kg during her pregnancy.

The former reality star also told fans that she’s now down to 63.5kg and is “so proud to feel like myself again”.

“6 months. 100 pounds down (Yes, I tipped the scales at 240 😜)
My first trip away from #BIRDIEMAE and emotional for many reasons, but so proud to feel like myself again. Even when it felt impossible, I chose to work harder,” the “I Wanna Love You Forever” hitmaker captioned the snap.

While Jessica didn’t divulge her diet or workout routine, she has been a spokeswoman for Weight Watchers in the past.

Jessica Simpson shows off 45kg weightloss. Photo: https://www.instagram.com/jessicasimpson/
Jess told fans she's 'so proud' of her 45kg weightloss. Photo: Instagram/jessicasimpson.

Praise for Jess

The former pop star’s big reveal has been met with praise online from the likes of Mad Men star January Jones, brother-in-law Evan Ross and Katie Couric, who said she looked “amazing.”

Fans are also showing support for Jess’ frank post.

“Love your honesty,” one wrote. “You’re such a positive role model for mamas and women!”

“The way you are able to snap back after pregnancy is just amazing,” read another comment. “Congratulations to you on the hard work.”

“You look amazing — but you always have regardless of your size!” a follower added. “Way to work hard and take care of yourself.”

NEW YORK, NY - OCTOBER 11:  Fashion Icon Award Honoree Jessica Simpson attends the 25th Annual QVC "FFANY Shoes on Sale" Gala at The Ziegfeld Ballroom on October 11, 2018 in New York City.  (Photo by Brian Ach/Getty Images)
Simpson, pictured during her pregnancy last October, says her weight hit 240 pounds. (Photo: Brian Ach/Getty Images)
Jessica Simpson shows off 45kg weightloss. Photo: Instagram/jessicasimpson.
Jess, her husband Eric Johnson and their three children. Photo: Instagram/jessicasimpson.

Additional reporting by Erin Donnelly.

Got a story tip or just want to get in touch? Email us at lifestyle.tips@verizonmedia.com

Want more lifestyle and celebrity news? Follow Yahoo Lifestyle on Facebook, Twitter and Instagram.

Or sign up to our daily newsletter here.