Taking to social media, the Loose Women star posted a hilarious side-by-side snap of herself and the Hollywood actress, as both posed in Primark's Greggs-themed swimsuit.
WATCH: Nadia Sawalha frolics on the beach in astounding swimsuit
In the caption, she wrote: "EVERYONE Relax you can go from hungry to not hungry in a @greggs_official @primark swimsuit .. PANIC OVER. Me and @katebeckinsale twinkle twins...#greggs #primarkfashion #fashiontwins #fashiontwinning #expectationvsreality #instagramvsreality #instagramvsreallife #twinningiswinning #twinningoutfits."
Sparking a reaction from her 519k followers, one commented: "You do make me chuckle @nadiasawalha."
Meanwhile, a second wrote, "You wear it well," and a third penned: "You're the best Nadia," followed by a heart-eye emoji.
Nadia replicated Kate Beckinsale's look on Saturday
It's not the first time that Nadia has channelled a celebrity on Instagram, and one of her most popular posts involves Kim Kardashian.
Recreating one of the reality star's latex bikini looks from Sports Illustrated, Nadia donned a make-shift two-piece, complete with elbow-length gloves and a motorbike helmet.
The TV star is often praised for her body positive posts
Sharing the hilarious snap, she wrote:
"Can anyone guess what THREE 'textiles 'my brilliant stylist @thedinasawalha used to recreate @kimkardashian stunning @sportsillustrated look? Clues are...Woof woof, Stay fresh. This will keep anything in place! Guess away!! #kimkardashian #kardashianmemes #kardashianmemes #instagramvsreallife #instagramvsreality #kardashianstyle #recreatethelook #sportsillustratedmodel #sportsillustratedswimsuit #sportsillustrated."
Nadia's relatable Instagram posts have been praised for inspiring body positivity but in a previous interview with HELLO! the TV star revealed that: "Every single day I have to work on it."
She continued:"People say to me: 'I wish I had your confidence', and I always answer them: 'I haven't got my confidence!' Sometimes I have to really fake it to make it. I just say: 'Today I feel amazing' and I don't."
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