Blake Lively Opens Up About Her 'Insecurity' Over 'Doing a Movie in a Bikini 8 Months After Having a Baby'

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Blake Lively's post-baby body may have impressed audiences, but the 28-year-old actress admits she wasn’t always confident.

The Shallows star opened up to on Tuesday, where she credited "vanity" and "insecurity" for getting her in tip-top shark-fighting shape.

WATCH: Blake Lively Reveals Post-Baby Diet After Birth of First Child -- and the Two Foods She Gave Up

"The struggle is that I am doing a movie in a bikini eight months after having a baby, and there is a level of insecurity and vanity that comes with that," Lively, now pregnant with her and husband Ryan Reynolds' second child, revealed. "You don't want to be the person in the magazines that they are saying, 'Ugh, look at her,' rather than, 'Wow, look at her.'"

"That's a shame because there shouldn't be that negative 'ugh' after someone has a baby," she continued. "Your body is so beautiful. You couldn't walk a Victoria's Secret runway, but it's beautiful in a completely different and incredible way."

"I do wish I had the bravery to go out there and represent women as they actually look," Lively added.

RELATED: Blake Lively Talks Motherhood, Life With Ryan Reynolds and Being 'Innately Maternal'

This isn't the first time the actress has opened up about the pressures to bounce back after baby.

Earlier this month, Lively was quick to shut down praise of her incredible post-baby weight loss, arguing against comparing her body to the bodies of other new moms.

"It's so unfair though because [post-baby weight loss is] so celebrated," she told Australian morning show Sunrise."And I think a woman's body after having a baby is pretty amazing. You don't need to be Victoria's Secret-ready right away because you just did the most incredible miracle that life has to offer. You gave birth to a human being! I'd really like to see that celebrated."

WATCH: Blake Lively Reveals How Ryan Reynolds Helped Her Get Bikini Ready for 'The Shallows' 10 Months After Giving Birth

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