Ariel Winter goes blonde, flaunts her booty for secret photoshoot

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Ariel Winter is giving us some serious Marilyn Monroe vibes.

The 18-year-old actress shared a photo of herself sporting a short blond wig and bright red lipstick on Wednesday, but once again, it's her racy outfit that has people talking. Winter donned a black bodysuit and red high heels under a sheer tulle skirt, striking a sexy pose for her 2.4 million Instagram followers.

"Shhh #secretshoot #magazine #blonde #tb," Winter captioned the sultry snap.

WATCH: 23 Times Ariel Winter Was Sexy and Confident on Instagram

ShhhπŸ™ˆ #secretshoot #magazine #blonde #tb

A photo posted by ARIEL WINTER (@arielwinter) on

While we're unsure of Winter's secret project, one thing we do know for sure is that she's currently single. Last week, she shut down rumors that she's been dating longtime pal Sterling Beaumon. "Everyone thinking I'm taken when I'm just over here like hi I'm single AF," she tweeted.

ET caught up with the Modern Family star last month, when she opened up about her Instagram posts and promoting a positive body image.

39 PHOTOS
Ariel Winter's sexiest Instagrams of 2016
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Ariel Winter's sexiest Instagrams of 2016
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Getting ready for @glamourmag's Women of the Year LIVE summit! #glamourWOTY see you soon;)
πŸ…°οΈ
🐰
Hef's πŸ‘§πŸ» & her 🐰#halloween
Follow me on snap- I'll be posting my everyday adventures and maybe answering some questions sometimes β€οΈπŸ™†πŸ» winter.ariel
BUTT really, don't miss a spot @kipzachary πŸ“Έ: @davinaadjani #secretshoot #embraceyourcurves
Makeup // @kipzachary Hair // @hairbyaviva Dress // #yousef_aljasmi Shoes // @stuartweitzman Jewelry // #harrykotlar
Thank you so much @aquahydrate for an amazing night! @champagnepapi was absolutely incredible ❀️❀️❀️ #drake #concert
@variety
🍾 #summer
#tbt to a great weekend at @miraval_resort ❀️ #spa #trip
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I couldn't bend so I had him snap #bendandsnap #photoshoot #roguemagazine
From Baccalaureate to Graduation tomorrow and then UCLA bound #classof2020 ❀️
Today's office...relax everyone it's cranberry juice and I'm wearing lady bit pasties. #DogYears #set #movie
2 million!!! Wow! I can't believe it...love you guys so much ❀️ #thankyou #love
I have a Burt shirt and you don't #throwinshade
Embrace all that you are. Don't let those outside voices become your inner voice #thisismybody #mychoice #loveyourcurves
Only a little crazy, baby πŸ’‹
Couldn't be more grateful to @shanelle_gray & @davidbarrygray for throwing me the most amazing graduation party ever last night...the amount of love and support they've shown me for the past four years has been life changing. My sister is my absolute best friend and my everything...❀️ Thank you so much. I couldn't be luckier or more grateful. I was in awe last night and I still am that you guys love me that much to do all of that for me...I never would be where I am today without you two...you guys saved me and taught me to be the person I am today. Dad...I love you!!! Thank you for always being there to support and love me as well and always put a smile on my face no matter what :). I'm so grateful for the bond we now share. Alenah the song you put together with Shanelle and recorded for me was one of the most special gifts I've ever received. I'm still tearing up thinking about it. Thank you for that and for your beautiful, special performance. Also a big thank you so much to Geraldine for putting it all together and to @contemporarycatering @robpauerful for the most amazing food! A special thank you as well to Sharon who is probably the biggest reason I was able to get through high school and accepted into college...you pushed me to always do my best and encouraged me...not to mention you were always there for my 1am freak outs about late projects :) Anddddd thank you SO MUCH to all of my amazing family members and friends that flew in to celebrate with us- you guys are the absolute best. Thank you also to the ones who didn't have to fly in...so much love was felt all around last night. Thank you thank you thank you!!!!!! Class of 2016...❀️ #uclabound
I don't know who made this of me but....yaaaassss πŸ‘πŸ½πŸ‘πŸ½πŸ‘πŸ½
Hello UCLA, 4s up 😌 #graduation
Hands up if you're feelin' yourself today too πŸ™‹πŸ½πŸ™‹πŸ½πŸ™‹πŸ½πŸ™‹πŸ½ #friday
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Found a hedgehog on #set this morning πŸ™‚
Boo you whore πŸ–•πŸΌ#meangirls #cosmo #blonde
Actual day 1 with Burt ❀️ #film #set #dogyears
Me + Burt = Dog Years Go see it πŸ‘ŠπŸΌπŸ‘ŒπŸΌALSO: Peep Brian in the back throwin' some serious shade. Just sayin'.
Might ride some 🐴 today πŸ˜› #dayoff
πŸ“Έ @jennessarose
Senior #prom #2016 :) Hair// @charles_dujic Makeup// @kipzachary
Happy Sunday ♠️
#ootd
#modernfamily #atas #event
I've got sexy ladies 🎼 #coachella ❀️
#coachella #2016 #baby πŸ“·@jessiebergg
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"I don't really think I'm telling myself, 'You should post this, you shouldn't post that,' I feel like I'm just having fun," Winter told ET. "Everybody is so hyped up on the fact that I post photos where my butt's out. It's a butt. Everyone has a butt. I don't think it's crazy."

WATCH: EXCLUSIVE -- Ariel Winter on Voting in Her First Election: 'I Wish We Had Better Candidates'

"It's like, 'Let me live! I'm enjoying my life, you're enjoying your life, you should be posting your butt if you like it, too!'" she added.

Watch below:

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