09/11/2012 10:19 am ET Updated Sep 12, 2012

Erin Heatherton, Leonardo DiCaprio's Girlfriend, Shows Off Bikini Body At Miami Beach Victoria's Secret Shoot (VIDEO)

She's ziplined in Mexico with boyfriend Leonardo DiCaprio -- and met his parents -- but here's guessing sweltering Miami in August might be the hardest thing model Erin Heatherton's ever been asked to survive. Why else would she have so few clothes on?

Oh, right: Victoria's Secret.

The Illinois-born Angel was snapped poolside at the Raleigh Hotel Monday modeling more than a few teeny bikinis, including a zebra print number seemingly made mostly of strings. If she seemed more comfortable than most splashing around in the shallow end wearing next-to-nothing, it's probably not just her insane body: Heatherton likely feels pretty lucky in Miami after being discovered during a vacation to South Beach way back when.

What's next for the 23-year-old? According to PopSugar, she's about to be joined for more work in Miami by fellow angel Candice Swanepoel -- no stranger to South Beach herself.

Check out our gallery of other celebs at the beach this summer below:

Celebrities Hit The Beach & Pool