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:

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  • Hayden Panettiere

  • Ciara

  • Maria Menounos

  • Gwen Stefani

  • Lea Michele

  • Angela Simmons

  • Janice Dickinson

  • Anne Hathaway

  • Angela Simmons

  • Ciara

  • Shemar Moore

  • Rosie Huntington-Whiteley

  • Naomi Campbell

  • James Marsden

  • Rachel Bilson & Hayden Christensen

  • Nicolette Sheridan

  • Balthazar Getty

  • Josh Radnor

  • George Clooney

  • Minnie Driver

  • Gwen Stefani

  • Emma Thompson

  • Sharon Stone & Boyfriend

  • Bruce Jenner

  • Eric Dane

  • Sharon Stone

  • Kelly Rowland

  • Angel McCord

  • Kelly Bensimon

  • Hayden Panettiere

  • Naomi Watts

  • Kate Hudson

  • Courteney Cox

  • Ashlee Simpson

  • Stephanie Seymour

  • Julianne Hough

  • Miley Cyrus

  • Gwen Stefani

  • Lindsay Lohan

  • Rita Rusic

  • Denise Richards

  • Michelle Rodriguez

  • Katie Holmes

  • Aimee Teegarden

  • Tori Spelling

  • Paris Hilton

  • Christina Milian

  • Kelly Rowland

  • Julianne Hough

  • Tori Spelling

  • Stacy Keibler