The old Clairol catchphrase ''Only her hairdresser knows for sure'' will never apply here. So how to explain pink hair's current showbiz renaissance? From Frenchy's Pepto bouffant to Kurt Cobain's muddy magenta and beyond, the look is now gracing a number of high-profile starlets, turning countless red carpets to rose-colored smashes.
The First Cuts
Grease's ''Beauty School Dropout'' who experienced ''trouble in tinting class'' was the original Pink Lady.
DEBBIE HARRY 1981
Who cares if the band was called Blondie? This fashion icon can color her hair any damn way she pleases.
CYNDI LAUPER 1984
She's so unusual, indeed. With her streaked locks, Lauper became one of MTV's first true eccentrics.
KURT COBAIN 1992
When the voice of a generation went pink, a thousand teen spirits followed...straight to the mall.
The Second Wave
A rose by any other name...well, it would still be some variation on the pop-punk princess' namesake shade.
GWEN STEFANI 2000
The short-lived braces? Not so much. But we did enjoy Gwen's moment in the fuchsia-colored sun.
Clearly, a rapper with paw prints tattooed on her breastbone isn't intimidated by a little box of hair dye.
KELLY OSBOURNE 2002
How to rebel when Daddy's the original crazy train? This magenta bob was a good start.
The Current Coifs
SCARLETT JOHANSSON 2006
When the film world (and one Mr. Timberlake?) is at your feet, hair-color whims are your prerogative.
RACHEL McADAMS 2007
Business or pleasure? The Notebook star confessed her new bubble-gum tresses are just for fun, not for a role.
JOSS STONE 2007
The once-hippieish Brit chanteuse drops her natural blond for something a little less Summer of Love.
It wasn't her hair that brought the boys to the yard, but this hip-hop sexpot still went My Little Pony pink.