Actresses who've dared to go bare (headed)

Bruce Willis shaved his head for "12 Monkeys" — no big deal.

Colin Farrell lopped off his locks for "Daredevil" — nary a word.

Vin Diesel let the sun shine on his dome for "XXX" — not a peep.

But what's the one thing most people know about "V for Vendetta," the thriller that opened Friday?

It's the flick that Natalie Portman shaved her head for.

Not since Keri Russell cut her hair short when "Felicity" was a must-watch show among a certain demographic has a haircut been the source of so much discussion.

Maybe it was the startling transformation from the Queen Amidala cinnamon-bun 'do in "Star Wars" to the Sinéad O'Connor-look for her red-carpet appearances, but Google "Natalie Portman shaved head," and see how many hits you get.

Here's a look at other actresses who've bared it all — from the neck up:

Demi Moore

Film: "G.I. Jane"

Year: 1997

Role: Lt. Jordan O'Neil

Why the shaved head? To prove she can be just as tough as any other Navy SEAL candidate, Moore's O'Neil buzzed it all off.

Fallout: The movie was a bomb, earning Moore her second worst-actress Razzie. It would also be her last big-budget film for a while; her next was 2003's "Charlie's Angels: Full Throttle."

Sigourney Weaver

Film: "Alien 3"

Year: 1992

Role: Ellen Ripley

Why the shaved head? After Ripley's pod crashes on another planet and her shipmates are killed, she wakes up in a prison without her flowing locks.

Fallout: Because of production problems, filming was halted. When it resumed months later, Weaver's hair had grown back. She would have it reshaved only for a $40,000 bonus. The producers decided to save money and paid $16,000 to have a bald cap with very short hair made.

Samantha Morton

Film: "Minority Report"

Year: 2002

Role: Agatha

Why the shaved head? She's a "PreCog," who's wired up to a contraption that enables her to see into the future so murderers can be arrested before they commit the crime.

Fallout: The two-time Oscar nominee kept the short-cropped look for her next two films, "In America" and "Code 46."

Cate Blanchett

Film: "Heaven"

Year: 2002

Role: Philippa

Why the shaved head? To avoid being recognized after she escapes from prison.

Fallout: The look didn't last long, but it did have a side benefit, enabling her to fulfill a childhood fantasy. "As a teenager, I wanted to shock my mother and cut off all my hair!" she said.

Persis Khambatta

Film: "Star Trek: The Motion Picture"

Year: 1979

Role: Lt. Ilia

Why the shaved head? It was the look sported by Deltan aliens who served as navigators on the starship USS Enterprise.

Fallout: The former Miss India asked producer Gene Roddenberry to take out insurance in case her hair didn't grow back. It did. Her film career never took off, and she died of a heart attack in 1998 at age 47.

"B" is for "bold," as in the far-from-Amidala 'do Natalie Portman sports in "V for Vendetta." (DAVID APPLEBY / WARNER BROS. PICTURES)
Former Miss India Persis Khambatta, left, shaved her head to star with William Shatner in "Star Trek: The Motion Picture." (TIMES FILE)
Demi Moore in 1996, sporting post-"G.I. Jane" growth. (AP)