Pop star Meghan Trainor would love to cop a feel of Leonardo DiCaprio and Jennifer Lopez's backsides.

The All About That Bass hitmaker has made it known she is a lover of curves and she dreams of one day getting the chance to feel up Oscar winner Leonardo and discover what makes J.Lo's bottom so pert and perfect.

"I just wanna know what J.Lo's butt feels like, because it's the most famous butt of all time," she tells Seventeen magazine. "As for a guy, Leonardo DiCaprio's. I'm obsessed with him, and I think that would be amazing."

However, Meghan isn't prepared to allow forward fans to get their hands on her rump.

"A lot of people want to grab my butt 'cause they're like, 'Oh, the bass...,'" Meghan cringed. "They ask, and I'm like 'Yeah, no thanks!'"

The singer is more comfortable having people admire her bum from afar and she admits her confidence has been given such a boost since finding fame, she is now choosing to show off her voluptuous figure in more fitted styles on the red carpet.

"A couple of years ago, you'd never see me in a dress," Meghan admitted. "And now I want to sha-zoom me. I mean, I want it tight. I want to show off what I got!"

The 22-year-old previously revealed she was never fully accepting of her body shape and used to cover herself up in baggy clothes at school.

"For a good six years, I wore sweatpants and sweatshirts, even on vacation in 90-degree weather - I was hiding," she recalls. "In pictures, you can just see my face."

That's all changed and Meghan would jump at the chance to go back in time to share a little advice to her insecure 17-year-old self.

"I want to hug that girl," she said. "I want to tell her, 'You're OK.'"