Her body confidence is one of her most attractive features, but it hasn't always been that way for her.
Speaking to Refinery29, the young star has admitted that her breast reduction surgery in 2015 is why she is so confident now.
“Before [the surgery], I didn't feel like myself, and everyone was so focused on my cleavage, so when I got the breast reduction it helped me feel so much better about my body.
"I used to have full-scale meltdowns in bathing suit shops because there was nothing I could find to wear. I always felt like crap about myself. It’s gotten a little better, but it’s still definitely hard.
"Like, my best friend, she’s super tall and skinny and she’ll wear the same bathing suit as me, but people will automatically look at me and call me out as a slut or write headlines about 'Ariel Winter’s cleavage.'
"Meanwhile they look at her like, 'Oh she looks so cute!' But I’ve learned to not care about that as much. I'm comfortable in a bathing suit, scars and all."
It hasn't stopped her from getting a lot of online hate whenever she posts anything slightly risky, like her most recent Memorial Day post on Instagram, but aside from the trolls, she has the confidence to wear, post and DO whatever the hell she pleases.