Katherine Heigl Through the Years

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Katherine Heigl loves changing her look.

"I've been auburn, chocolate brown, and darker blond with big chunky streaks," the 28-year-old star tells InStyle.

Heigl, who plays Dr. Izzie Stevens on Grey's Anatomy, and who's set to star in the upcoming comedy Knocked Up, is pretty low-key about her hair.

"All I ever do is throw it in a bun," she says.

How does Katherine Heigl do it? By keeping the long mane manageable with the help of combing Kerastase conditioner in it daily "so it doesn't turn into a big dreadlock."

Where her simplicity wanes is with makeup. "I could open a beauty supply store in my house," Heigl says.

Friends have even asked her to do the makeup for their weddings. As her own nuptials approach (her fiancé is musician Josh Kelley, and they're rumored to be marrying this winter), it's nice to know she could fill in if the makeup artist is a no-show.

Here's a look at the many different looks of this talented actress. Behold, Katherine Heigl's transformation through the years...

Katherine Heigl: 1995
Katherine Heigl: 2000

1995 (left): No awkward teen years here: Heigl's good looks were apparent as a child and she began modeling at age 9; her first TV spot was for Cheerios. 2000 (right): Beach blonde waves are just the thing for a summer premiere in L.A.

Katherine Heigl: 2001
Katherine Heigl: 2004

2001 (left): "As a brunette, I didn't look like the girl next door," says Katie Heigl. "I looked more exotic, which I enjoyed." 2004 (right): Back to blonde, she works the fringe element. "I can't style bangs," she says, "but I love them!"

Katherine Heigl: 2005
Katherine Heigl: 2007

2005 (left): With a role on the mega-hit Grey's Anatomy, she has a reason to smile Great teeth is another. 2007 (right): On the red carpet, Katherine Heigl turns up the heat with head-to-toe glamour. "Old Hollywood style is coming back," says stylist Sean Flanigan, who has worked with the star.

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.


Grey's Anatomy Quotes

MEREDITH: "You don't get to call me a whore. When I met you, I thought I had found the person that I was going to spend the rest of my life with. I was done! All the boys and all the bars and all the obvious daddy issues, who cares? I was done. You left me. You chose Addison. I'm all glued back together now. I make no apologies for how I chose to repair what you broke. You don't get to call me a whore."
DEREK: "This thing with us is finished. It's over."
MEREDITH: "Finally."
DEREK: "Yeah, it's done."
MEREDITH: "It is done."

Lexie: [narrating] Grief may be a thing we all have in common, but it looks different on everyone.
Mark: It isn't just death we have to grieve. It's life. It's loss. It's change.
Alex: And when we wonder why it has to suck so much sometimes, has to hurt so bad. The thing we gotta try to remember is that it can turn on a dime.
Izzie: That's how you stay alive. When it hurts so much you can't breathe, that's how you survive.
Derek: By remembering that one day, somehow, impossibly, you won't feel this way. It won't hurt this much.
Bailey: Grief comes in its own time for everyone, in its own way.
Owen: So the best we can do, the best anyone can do, is try for honesty.
Meredith: The really crappy thing, the very worst part of grief is that you can't control it.
Arizona: The best we can do is try to let ourselves feel it when it comes.
Callie: And let it go when we can.
Meredith: The very worst part is that the minute you think you're past it, it starts all over again.
Cristina: And always, every time, it takes your breath away.
Meredith: There are five stages of grief. They look different on all of us, but there are always five.
Alex: Denial.
Derek: Anger.
Bailey: Bargaining.
Lexie: Depression.
Richard: Acceptance.