Watch Ashley Graham Twerk in a Thong: 'I Don't Care How Many Dimples Are in My Booty!'

The Sports Illustrated Swimsuit Edition model talks to ET about her sexy Instagram at the Forbes Women's Summit.

Ashley Graham certainly knows how to advertise her underwear line.

The Sports Illustrated Swimsuit Edition model shared an Instagram video of her twerking to Jennifer Lopez's "I Luh Ya Papi" on a yacht while wearing a thong from her Dreamer lingerie collection. Graham captioned the video with the hashtags, "#sizesexy" and "#beautybeyondsize."

PHOTOS: Andreja Pejic, Ashley Graham Walk in H&M's Inclusive Paris Runway Show About 'Strength and Beauty'

When ET caught up Graham at the 2016 Forbes Women's Summit in New York City on Thursday, we asked her about the sexy post and she says it was all about sending a message of body positivity.

"When I'm on set, the world is my oyster and you can't tell me anything," she told ET. "I don't care how many dimples are in my booty. I'm going to be on a yacht, always dancing with all of my friends."

It's a message the 28-year-old cover girl has been trumpeting since she blew up in the modeling industry, and one of the reasons she told ET that she hates the term "plus-size."

"The things that I don't necessarily like about it is all the negative stigmatisms that go with the word plus-size -- you're fat, you're lazy, you have no drive, no determination, you're constantly eating," she explained. "Honey, I work out. I work out three days a week. I lift. I do barre. I do it all. It's the stereotypes. That's what I really don't like. I am me. Take it or leave it."

ET recently sat down with Graham and she exclusively opened up about her insecurities, her views on dieting and when she's OK with Photoshop. Find out what she said in the video below.

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