Zoe Saldana shows off impressive post-baby body in 'Guardians of the Galaxy' costume: 'It pays off to work hard'

The Lesson Zoe Saldana Hopes Her Twins Learn By Her Husband Taking Her Last Name

Zoe Saldana has a message to her fellow "mommies of the world" when it comes to getting in shape after giving birth: "It pays off to work hard!"

The 37-year-old actress -- who welcomed twin boys, Bowie and Cy, with husband Marco Perego in November 2014 -- took to Instagram on Thursday to show off her fit post-pregnancy physique by rocking one of the skin-tight costume from Guardians of the Galaxy, which she wore in 2013 before getting pregnant.

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"Holy S---! You guys, I had to share this," Zoe captioned the impressive pic. "After twins I can't believe I was able to slip into this!"

The stunning star credited her exercise regimen and her healthy lifestyle for her jaw-dropping figure, which she admitted was "hard work," and assured other mothers, "If I did it you can too."

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Saldana has been very open about her efforts to get in shape after giving birth. In a video she posted to Facebook in April, she even showed how she works out and entertains her young sons at the same time.

Hopefully, her healthy lifestyle won't be derailed by the sweet-tooth temptations of the holiday season -- Saldana has made it clear that she is taking Christmas very seriously this year.

After sharing her super-fit selfie, the Avatar actress posted a video of herself decorating the family's Christmas tree with color-changing lights while listening to "This Christmas" by Wham!.

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In February, Saldana spoke with ET about being a new mom where she revealed that she's "enjoying every minute of it."

See recent photos of Saldana:

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Zoe Saldana shows off impressive post-baby body in 'Guardians of the Galaxy' costume: 'It pays off to work hard'
LAS VEGAS, NV - NOVEMBER 19: Actress Zoe Saldana attends the 16th Latin GRAMMY Awards at the MGM Grand Garden Arena on November 19, 2015 in Las Vegas, Nevada. (Photo by Mindy Small/FilmMagic)
LAS VEGAS, NV - NOVEMBER 19: Actress Zoe Saldana (R) and artist Marco Perego attends the 16th Latin GRAMMY Awards at the MGM Grand Garden Arena on November 19, 2015 in Las Vegas, Nevada. (Photo by Christopher Polk/Getty Images for LARAS)
Actress Zoe Saldana (R) and Marco Perego arrive at a cocktail reception to celebrate the opening of the multimedia exhibtion 'Hollywood Costume,' October 1, 2014 at the historic Wilshire May Company Building, the future location of the Academy Museum of Motion Pictures, in Los Angeles, California. 'Hollywood Costume' runs from October 2 to March 2 and features over 100 famous cinematic costumes, including the original red ruby slippers worn by Judy Garland in The Wizard of Oz and Dorothy's blue and white gingham pinafore dress. AFP PHOTO / Robyn Beck (Photo credit should read ROBYN BECK/AFP/Getty Images)
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