It's that intersection where a maillot becomes a bikini, function becomes fashion, girl becomes woman: the monokini. First created by Austrian-American designer Rudi Gernreich in 1964, the body-baring one-piece was more a leotard with suspender straps that left the breasts bare. Nowadays, they're a bit more discreet and an instant statement piece for Hollywood's hottest celebrities, from Kim Kardashian to yes, a pregnant Tori Spelling.

Launch our gallery below to check out some of the best celebrity monokini moments.

Loading Slideshow...
  • AnnaLynne McCord

  • Christina Milian

  • Kim Kardashian

  • Kelly Brook

  • Stephanie Seymour

  • Miranda Kerr

  • aubrey o'day

  • Tori Spelling

  • Kim Kardashian

  • Courteney Cox

    (Splash)

  • Alessandra Ambrosio

    (Splash)

  • Ashlee Simpson

    (Splash)

  • Julianne Hough

    (Pacific Coast News)

  • Miley Cyrus

    (Pacific Coast News)

  • Gwen Stefani

    (Bauer Griffin)

  • Lindsay Lohan

    (Bauer Griffin)

  • Denise Richards

    (Splash)

  • Michelle Rodriguez

    (Bauer Griffin)

  • Katie Holmes

    (Bauer Griffin)

  • Aimee Teegarden

    (Bauer Griffin)

  • Tori Spelling

    (Startraks)

  • Maria Menounos

    (Fame Pictures)

  • Christina Milian

    (Fame Pictures)

  • Kelly Rowland

    (Fame Pictures)

  • Ciara

    (Fame Pictures)

  • Julianne Hough

    (Fame Pictures)

  • Tori Spelling

    (Fame Pictures)

  • Stacy Keibler

    (Bauer Griffin)

  • Teresa Giudice

    (INF)

  • Chelsea Kane

    (Splash News)

  • Christina Milian

    (Getty)

  • Taryn Manning

    (Splash)

  • Bethenny Frankel

    (Splash)

  • Olivia Munn

    (Splash)

  • Whitney Port

    (Splash)

  • Alicia Keys

    (Splash)

  • Adriana Lima

    (Splash)

  • Gabrielle Union

    (Splash)

  • Christina Milian

    (Splash)

  • Taryn Manning

    (Splash)