She's changed her hair color, she's changed her clothing, she's even changed her religion—Madonna's near-constant reinvention has helped the singer stay in the spotlight for 30 years. Whenever she's got a new album or is embarking on a new tour, she's got a new style. Today's the Material Girl's 54th birthday, and to celebrate the occasion we've tracked down her 54 most famous looks. There's tied-up-in-a-black-PVC-suit bondage Madonna, red carpet movie star Madonna, Marilyn Monroe-channeling "Material Girl" Madonna, making out with Britney Spears onstage Madonna, and many, many more. Her style's been good, bad, and highly questionable, but at least it's never been boring.

THE BAD GIRL

THE BARDOT

THE BULLET BRA

THE CATHOLIC SCHOOLGIRL

THE COWGIRL

THE FASHION DON'T

THE GLADIATOR

THE HINDU GODDESS

THE LIKE A VIRGIN

THE MARIE ANTOINETTE

THE MARILYN MONROE

THE MEMOIRS OF A GEISHA

THE "MOM, YOU'RE EMBARRASSING ME!"

THE OM

THE PANTENE COMMERCIAL

THE SERIOUS DIRECTOR

THE SEXY RINGLING BROS.

THE SPORTY SPICE

THE UNDERCOVER AGENT

THE WITCHY WOMAN

THE AGING COUNTRY STAR

THE CARRIAGE ATTENDANT GOING TO A FUNERAL

THE CIRCUS ACT

THE DEEEE-LITE

THE DISCO HAREM PANTS

THE EAST VILLAGE PUNK

THE FLAPPER

THE GUN SHOW

THE GWEN STEFANI

THE HIP-HOP MC

THE HUMANITARIAN

THE JEHOVAH'S WITNESS

THE MILF

THE OLD SCHOOL

THE P.I.M.P.

THE RIDE MY PONY

THE SAMANTHA JONES

THE SCOTTISH LASS

THE SEVENTIES FLIP

THE WAX FIGURE LOOK-ALIKE

THE BACK TO BRUNETTE

THE CAT EYE

THE EARLY YEARS

THE EVITA

THE "HEY, BUDDY. MY EYES ARE UP HERE"

THE HIPPIE-DIPPIE

THE MAE MORDABITO

THE MATERIAL GIRL

THE PAPA DON'T PREACH

THE PVC BONDAGE KING

THE RETRO PIN-UP

THE SEX KITTEN

THE "STRIKE A POSE"

THE ORIGINAL