Miley Cyrus
just loves to push the boundaries! 

The "Wrecking Ball" singer posted a bikini snap via Instagram on Wednesday ... as she posed with her backside in the air and her hand in between her legs.

"#f--kyeahtampa yasss that's a bruise on my arssss #❤️," she captioned the sexually explicit photo. 

Miley made headlines earlier this week when a YouTube video went viral of her performing "Baby Got Back" at a Karaoke bar. Check out the video below, which mostly shows Miley twerking.   

Yeah, it definitely seems like the 21-year-old isn't going to give up this whole fascination with her booty anytime soon. 

What do you think of Miley's suggestive photo? Tell toofab in the comment section below and check out even more of the former Disney star's photos in the gallery above!

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