Ariel Winter flashes booty in teeny blue bikini

Ariel Winter is feelin' herself this summer!

The 19-year-old "Modern Family" actress took to Instagram on Sunday to share some enviable snaps of herself enjoying some much-needed summer fun in the sun.

SEE ALSO: Bella Hadid's sexiest Instagrams of 2017 so far

Lounging on a giant pizza floatie made perfectly for Instagram, Winter is seen rocking a teeny blue bikini throughout the series of sexy photos. In two of the pictures, the divisive star is seen from behind, showing off her perky derrière in the revealing two-piece. In the third photo of the series, Winter flaunts her toned abs as she lays with her eyes clothes and soaks up the sun.

See the photos in the gallery below:

Ariel Winter's sexiest Instagrams of 2017
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Ariel Winter's sexiest Instagrams of 2017
๐Ÿ’˜Lake Tahoe Life๐Ÿ’˜
Y'all there are stingrays in the water๐Ÿ˜ฏ
First day back filming #ModernFamily season 9๐Ÿฆ„
๐Ÿ’€ #halloween
๐Ÿyour favorite wives in paradise๐Ÿ
โš ๏ธ
We're on a boat ____________!!!!
Happy Valentine's Day โค #valentines
Happy 30th my love๐Ÿ’˜Every single second I spend with you I fall more in love. I couldn't be more grateful to be your partner in crime. You are the most incredible man, and I love you more than absolutely anything. I can't wait to celebrate you๐Ÿ’— Here's to many, many more birthdays together โค๏ธ
#bts @allanface @jonathan_colombini
โ™ ๏ธ
@imagista @payam_pictures
Thanks @imagista for capturing the pout ;) โค๏ธ
First #stampede with the lovely Meaden family ๐Ÿ’–
Happy #MemorialDay ๐ŸŒŠ
New ink @_dr_woo_ ๐ŸŽ‰
Talking about how I have the swimming skills of a young child thrown in without floaties ๐ŸŒŠ
Y'all I love you but PLEASE pay attention and post my REAL point from my @refinery29 interview!!! Not that I'm "defending living with my 29 year old boyfriend" or that I'm "firing back at Trump" because first of all I don't need to defend anything I'm super happy and in love, and I'm not firing at anyone just sharing an opinion after being ASKED! The point was to take back the beach and help people understand that the beach should be a safe space to go as you please and feel good about yourself no matter what! Makeup on, makeup off, heels, sandals, covered up, exposed, do you and feel HAPPY about who you are and YOUR choices, not the ones society wants us to choose. It's also HARD to be 100% confident- I'm still not- but I'm on a journey and I want other people to know they're not alone. We all struggle but through our struggle we get stronger and closer to our goals. Body positivity is important- not that I live with my boyfriend. Press- please read the article and take it for what it is- not what will give you more readers! Let's all be real and represent people how they want to be represented through what they actually say. Rant over. Love yourselves, love others, be yourselves, and be happy. Xo ๐Ÿ˜ป thank you so much @refinery29 ๐Ÿ˜ป #beach #bodypositive
Had the best time in Vancouver with my babe, but also with amazing new friends. Super lucky ๐Ÿ’˜ Also... those wreck beach stairs though!!!!!!!!๐Ÿ˜ต
bb ๐Ÿ’ thanks to @ninezeroone โค๏ธ
Saturyay๐Ÿ–ค #ootd
On @jimmykimmellive tonight! โค๏ธ
Thank you so much for having me @chevrolet & @bootsybellows!!! I had an amazing time! #findnewroads #ad
โค๐Ÿฆ„ Makeup: @kipzachary Hair: @jonathan_colombini
The booty's back in Caliโ˜€๏ธ
Bonnie & Clyde
When in Beijing at a cigar bar...
#photoshoot #vibes
Chickpea & Pinto Beanโฃ๏ธ#mcm
3 Aquarians + 1 Cancer
๐Ÿ“ธ @jackgriffo ๐Ÿ

Winter, who recently moved in with her boyfriend Levi Meaden, 29, is no stranger to showing skin on Instagram, though she clearly doesn't care what people think of her racy posts. Late last month, the star took to Instagram to fire back at her critics.

"Makeup on, makeup off, heels, sandals, covered up, exposed, do you and feel HAPPY about who you are and YOUR choices, not the ones society wants us to choose," she wrote in a lengthy caption under a photo of herself in a bathing suit. It's also HARD to be 100% confident -- I'm still not -- but I'm on a journey and I want other people to know they're not alone. We all struggle but through our struggle we get stronger and closer to our goals. Body positivity is important."

RELATED: Stars that have gone nude on Instagram in 2017:

Celebrity nude shots in 2017
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Celebrity nude shots in 2017
Same butt different ๐Ÿงก
comfortable in my rolls. fuck wit me.
Happy day of birth to my son, my whole heart โค๏ธ
So honored to have been photographed by Mert and Marcus for their book new book! 20 years in the making! It's out Sept 7th #mertandmarcus @mertalas @macpiggott #taschen
Cheers to @playboy for going back to nudes. The female body is so beautiful, every size and every age. Be proud! #thefemalebodyisbeautiful #allshapesandsizes #loveyourself #loveyourbody
Hot dog dog. Thanks for chiming in on what you feel I deserve to be paid. I believe women deserve equal pay. However I don't believe I deserve equal pay to Chris and Dave. They are legends and 2 of the greatest comics of all time. I would like to say that I have been selling out arenas these last couple years. Something a female comic has never done. That's a big deal to me, especially because I know I do my best every night on stage for the audience and they have a good time. I didn't ask for the same as my friends. I did ask for more than the initial offer. I will continue to work my ass off and be the best performer I can be. The reports of me "demanding" or "insisting" on equal pay to them aren't a true. #fat #stealsjokes
#54 and clean. Thanks for the birthday wishes!
i don't smoke
Another day at the office ๐Ÿ˜›โ™ฅ๏ธ
in Eutopia ๐ŸŒฌ๐Ÿฆ‹๐Ÿ’™
Mikey made me do it ... Miami nights ๐Ÿ™Œ๐Ÿป 1. This is my pre DWTS body๐Ÿฆ„ 2. I am not currently in Miami but am in NYC 3. I posted this knowing most of you would be judgmental and couldn't resist a chance to tear me down and I was right. 4. Go be offended at your own life. 5. I'm living my life to the fullest. โค๏ธ
Just wanted to share that one of the reasons @eatingboys has inspired me so much is because of the way she mixes her humor and sexuality. I spent so many years loving my body but thinking it wasn't lovable by others- its sole purpose was to be fodder for jokes. I performed the insult so no one else could. I don't regret any of it- that's my art and that was my truth- but now, at age 31, having been through hell and back with my health and other people's perceptions of my physicality, I feel deeply comfortable with the idea that this pear-shaped pot of honey is equally good for making people laugh and laying out like a Suicide Girl circa 2004. Love it all.
mother nature
Amore mio
Iโ€™ll tell you what freedom is to me. No fear. #NinaSimone
Gold ๐Ÿ’›
Something special today ๐Ÿ–ค
playing dress up
birthday suit
La Sirena
Mid fitting nap time ๐Ÿ˜ˆ
I'm very proud to be a part of the March/April issue of Playboy. I penned a short essay along with my pictorial titled, "The Feminist Mystique". A big thank you to @Playboy, the creative team, and @cooperbhefner for such a unique opportunity. #NakedIsNormal
NYC//bed series
Loving you so far 2017. โœŒ๐Ÿป
Thank you @fsseychelles for your outdoor showers, beautiful hospitality, delicious steaks and flying foxes! Shot by my exclusive shower partner @mrjustinervin๐Ÿ’ฆ
Nap time = The Best Time ๐Ÿ˜‡๐Ÿ™Œ๐Ÿ™Œ
The mystery about my panties... solved! ๐Ÿ˜‚๐Ÿคฃ๐Ÿ‘๐Ÿป. Can u see ๐Ÿค“ me now?! Lol . The jokes on u๐Ÿ™ƒ๐Ÿฅ‚ #opticalillusion
๐Ÿ›€๐Ÿพ๐Ÿท๐ŸŽ That's what's up #NewSong #NewVideoAlert #BirthdaySong! ๐Ÿšจ๐Ÿšจ ๐Ÿ‘‰๐Ÿฝ#gratitude! Feeling so grateful today! #LinkInBio
Just a typical press day with @mj_day for the launch of @si_swimsuit 2017!!

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