"All love", she added in the caption for a photo of a field of flowers.
McKayla Maroney is best known for being an Olympic gold medalist and for the "not impressed" face she made after winning a silver medal, but now she's showing off her new image on social media.
The video took the Internet by storm and some people even assumed that her Instagram account got hacked.
Captioning the short video, "another world premiere", McKayla did not hesitate to defend her sexy post - which is nearly at 1 million views.
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After the racy video caused a stir, Maroney responded to those who suggested she was hacked and didn't intend to share such a revealing video.
The photos follow. The original thong Instagram post, which is about to reach 1 million views, is also embedded. "Not everyone's gonna like you, but if you stay true to yourself they might just respect you".
"I don't mean to freak anybody out but at the end of the day, I have changed". "And for people saying that, for the most part - it would kind of hurt my feelings when you haven't done anything".