The former TOWIE star, 23, has been working hard on toning up and perfecting her body and naturally couldn't resist posting the results on social media. And we're glad she did!
Sam shared a post-workout picture on YouGossip yesterday (13 June) and, we have to admit, our jaws dropped just a little bit!
Wearing a simple black bikini, Sam showed off her amazing abs and trim physique in a stunning body selfie.
While most of us would have been sunbathing and sipping Pimms, Sam proved her dedication by enduring a toning session on Friday afternoon in her sunny garden.
Alongside the smokin' hot photo, she wrote the message: "#nofilter been working the abs today in the garden.. Summers here !! Need to get toned who's with me ??"
It's been a very busy week for the reality TV star, who also took part in this year's Celebrity Big Brother.
She launched her debut fragrance LaBella (on 12 June) and is embarking on a promotional tour of the UK to sign autographs, starting with her first meet and greet with fans in Manchester on Saturday (14 June).
But during this exciting week, the Essex star has also been a teeny bit sad.
She's been separated from boyfriend Joey for a few weeks as he filmed the second series of his ITV2 documentary Educating Joey Essex.
But the good news is that Joey is currently on his way home to be reunited with Sam.
While Sam simply wrote "Joey Essex is home" on Twitter, he bid farewell from Brazil with the message: "Home time!!! Leaving hotel now. I love you BRAZIL! #SeeYouSoonEssex."
What do you think of Sam Faiers' underwear selfie? Tell us below!