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Gwyneth Paltrow

Rocstar/FAMEFLYNET PICTURES

Perhaps we should have tried that annual Goop cleanse...

Gwyneth Paltrow was spotted in Puerto Vallarta, Mexico on Saturday where the 42-year-old mother of two flaunted her insane figure while strolling solo on the beach, putting her perfectly-sculpted bod on full display. 

Wearing an itty-bitty ruffle bikini, a body chain necklace and aviator shades, the Goop goddess showed off her toned and trim shape (which could put many women half her age to shame), proving it's totally possible to still turn heads—even when you're not a twentysomething starlet. 

According to an eyewitness, the Iron Man star was on vacation over the weekend to celebrate the 50th birthday of her BFF Crystal Lourd, and guests, includingJoe Jonas and Lori Laughlin, stayed at a local resort. 

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Gwyneth Paltrow

Theo Wargo/NBC/Getty Images for 'The Tonight Show Starring Jimmy Fallon'

"Paltrow was there by herself and seemed very happy and relaxed as she walked the beach with Crystal," the eyewitness tells E! News. "You could tell Paltrow and Crystal are really close, they seemed comfortable talking and laughing with each other." 

If you're able to peel your eyes away from Paltrow's enviable abs, then you may notice that the actress is still sporting her Chris Martin tattoo: a tiny "C" which is inked on the left side of her hip.

The tat is still intact nearly 10 months after the two announced their decision to consciously uncouple split, although the exes have maintained an incredibly amicable relationship. "We've worked really f--king hard to get to [this] point," the Oscar winner recently told Shape magazine. "But we're very, very close, and it's so nice. I feel like it's, in a way, the relationship we were meant to have."

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Tracy Anderson, Gwyneth Paltrow

Chris Martin aside, Paltrow, who has been working with celebrity fitness guru Tracy Anderson for years, clearly didn't waste any time before kicking off her 2015 diet and exercise plan. 

"She's been doing the [Tracy Anderson] method consistently for seven years, changing her content  every ten days. She's been very focused. As a result she's got amazing, feminine definition," the trainer previously told E! News of her longtime client, adding that Gwyneth "does the workout six days a week, changing her content every 10 days." 

And while the regime sounds intense, it's bound to pay off if you want a booty like Gwyneth. 

"She had 35 extra pounds on her. Her butt was long and she had outer thigh problems..." Anderson told Into the Gloss of Paltrow before she whipped her into shape in 2006. "Now, seven years later, she looks younger every year; she's totally transformed."

—Additional reporting by Michelle Falls

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