Brooke Shields, 54, wows fans with gravity-defying ab workout

Brooke Shields showed off her impressive workout on social media. (Photo: ANGELA WEISS/AFP via Getty Images)

If Brooke Shields's latest Instagram post is any indication, age is nothing but a number.

The 54-year-old actress shared a video of herself and a trainer at Iconoclast Fitness in New York, showing off her incredible fitness skills. The clip shows Shields doing crunches while completely suspended in the air, hanging on to her trainer and using her legs as support.

"Defying gravity at the gym today. Still feeling the burn," Shields captioned the clip.

And as if the first video weren't impressive enough, the former Calvin Klein model also included a second video that shows her doing an inverted squat while hanging upside down with her feet in gravity books.

Fans and fellow celebrities were quick to praise the star's show of strength. Jaime Camil, whom Shields acted alongside during her Jane the Virgin guest role, left a clapping emoji and a raised hands emoji. And Shields's Law & Order: SVU co-star Ryan Buggle commented with three muscle-flexing emoji.

Brooke Shields through the years
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Brooke Shields through the years
Actress Brooke Shields listens during a news conference the day before attending the traditional Opera Ball in Vienna, Austria, February 3, 2016. REUTERS/Heinz-Peter Bader
Actress Brooke Shields eulogizes during the memorial service for Michael Jackson at the Staples Center in Los Angeles, California, July 7, 2009. A Gospel choir singing "We're going to see the king" launched an emotional public memorial for Michael Jackson on Tuesday as the music world and thousands of fans bade farewell to the singer known as the "King of Pop." REUTERS/Mark J. Terrill/Pool (UNITED STATES ENTERTAINMENT OBITUARY)
Brooke Shields causes an internet frenzy whenever she posts a photo of herself in a swimsuit.

Birthday: May 31

Age Turning: 54

Model and actress Shields has been in the spotlight since her pre-teen years, from her controversial role in 1978's Pretty Baby, to The Blue Lagoon, and countless Hallmark films.

Actress Brooke Shields attends the "Woman In Gold" premiere at the Museum of Modern Art in New York March 30, 2015. REUTERS/Andrew Kelly
Brooke Shields
Actress Brook Shields poses for photographers after a gala benefit performance of "The Vagina Monologues" in New York City, February 10, 2001. Over 70 women entertainers participated in the performance.
Brooke Shields attends AAFA American Image Awards 2019 at The Plaza, Manhattan, New York on Apr. 15, 2019. (Photo by Sam Aronov/Pacific Press/Sipa USA)
Brooke Shields and Stacey Bendet Eisner attends AAFA American Image Awards 2019 at The Plaza, Manhattan, New York on Apr. 15, 2019. (Photo by Sam Aronov/Pacific Press/Sipa USA)
Actress Brooke Shields listens during a news conference the day before attending the traditional Opera Ball in Vienna, Austria, February 3, 2016. REUTERS/Heinz-Peter Bader
New Orleans Hornets Chairman and NBA governor Jac Sperling (L) joins actresses Brooke Shields, Daryl Hannah (2nd R), and Melanie Griffith (R) at the NBA basketball game between the New Orleans Hornets and San Antonio Spurs in New Orleans, Louisiana January 23, 2012. REUTERS/Bill Haber (UNITED STATES - Tags: SPORT BASKETBALL ENTERTAINMENT)
Actress Brooke Shields arrives for The Film Society of Lincoln Center's 2010 Chaplin Award Gala honoring award-winning actor and producer Michael Douglas in New York City May 24, 2010. REUTERS/Jessica Rinaldi (UNITED STATES - Tags: ENTERTAINMENT)
Actress Brooke Shields attends the Pamella Roland Fall 2010 collection during New York Fashion Week February 16, 2010. REUTERS/Carlo Allegri (UNITED STATES - Tags: FASHION)
Actress Brooke Shields, star of the NBC series "Lipstick Jungle", takes part in a panel discussion at the NBC Universal Summer press tour in Beverly Hills, California, July 21, 2008. REUTERS/Fred Prouser (UNITED STATES)
"Lipstick Jungle" star actress Brooke Shields arrives at the NBC Universal Experience as part of upfront week in New York on May 12, 2008. REUTERS/Shannon Stapleton (UNITED STATES)
Stars of the NBC show "Lipstick Jungle", Brooke Shields (L), Lindsay Price (C) and Kim Raver laugh as they arrive to attend the NBC Network upfronts in New York May 14, 2007. REUTERS/Lucas Jackson (UNITED STATES)
Actress Brooke Shields attends the opening of the Oscar De La Renta boutique in Los Angeles April 18, 2007. The evening will also benefit the Entertainment Industry Foundation's Women's Cancer Research Fund. REUTERS/Mario Anzuoni (UNITED STATES)
U.S. actress Brooke Shields smiles during a photo call in London April 14, 2005. Shields will be taking the stage role of Roxie Hart in the hit musical "Chicago" later this month for nine weeks. REUTERS/Kieran Doherty KD/MK
Actress Brooke Shields poses for photographs after arriving to the Women In Film Celebrates The Crystal and Lucy Awards on September 20, 2002 in Los Angeles, California. Shields was presenting the Norma Zarky Humanitarian Award. REUTERS/Adrees Latif AL
Actress Brooke Shields portrays Little Red Riding Hood as she participates in a charity fundaraising event for the Starbright Foundation December 6, 2001 in Beverly Hills. [The foundation, which has published its second book "Once Upon A Fairy Tale" is dedicated to empowering seriously and chronically ill children and teens to overcome challenges they face daily.]
Former 'Suddenly Susan' star Brooke Shields sealed her wedding vows to writer-prodcuer Chris Henchy in a Catholic ceremony more than a month after April 4 nuptials were held on Catalina Island, her publicist's office said May 31, 2001. Shields is seen with Henchy at the premiere of the film "The Bachelor" in this November 3, 1999 file photo in Hollywood. XX
US actress Brooke Shield uses a pocket camera as she arrives for the official screening of [British director John Boorman's film "The General"], May 19. [Boorman's entry] is one of 22 films that compete for the Palme d'Or at the 51st Cannes Film Festival.
Actress Brooke Shields watches her husband Andre Agassi play in his fourth round match at the Australian Open in Melbourne January 26. Spain's Alberto Berasategui defeated Agassi for a place in the quarter finals of the grand slam tournament, with a score of 3-6 3-6 6-2 6-3 6-3. SPORT TENNIS OPEN
Actress Brooke Shields reacts as she watches her husband, Andre Agassi, play his first round U.S. Open match against American Steve Campbell, August 26. Agassi is a past U.S. Open champion. SPORT TENNIS OPEN
Actress Brooke Shields covers her eyes as she watches her fiance Andre Agassi lose his U.S. Open semi-final match to second seed Michael-Chang September 7. -Chang defeated Agassi 6-3 6-2 6-2 to advance to the final. Agassi's coach Brad Gilbert sits behind Shields.
Actress Brooke Shields arrives with actor Judd Nelson for the gala Carousel of Hope Ball October 25 at the Beverly Hilton in Beverly Hills, California. Shields and Neslon star together in a new television series. The benefit is the single largest one-night fundraising event of its kind in the world, benefiting diabetes research.
Actress Brooke Shields celebrates after her boyfriend [Andre Agassi] defeated American [Bryan Shelton] in his first round US Open match August 29.
Actress girlfriend of Andre Agassi, Brook Shields (C), watches his arrival on the Wimbledon centre court June 29. Agassi meets [Pat McEnroe] in the third round of the Wimbledon tennis championships
Actress Brooke Shields reacts as she attends the US. Tennis Open championships in New York September 7
Tennis star Andre Agassi (L) and actress Brooke Shields make their way underneath the stadium holding hands at the US. Open championships in New York September 3
Brooke's brows — in all their brushed up bulk and glory — were the stuff of '80s (and '90s, and, let's be honest, present-day) legends. We're not worthy.

The comments from fans were just as positive. "Wow, wow, wow! You're making us 50s gals proud! Well done you!" one person commented.

"You are a superwoman," another person wrote.

Shields's new post isn't the first time she's showed off her workout routine and toned body. In July, the Blue Lagoon actor posted a video and photo of herself in a bikini while enjoying a day out on the water.

-This article first appeared on Yahoo

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