Everything's Rosy for Renee Zellweger

Everything's rosy for Renee Zellweger. The Oscar winner, and star of the upcoming flick "Leatherheads," exposed her true colors for In Style's April issue, dishing a bit about the prom, her ever-changing hair, and even her good friend George Clooney.

[ See Pics From Renee's In Style Photo Shoot ]

Renee On...

Her Prom Dress:
For her high school prom, Renee wore a forest green, flamenco-style gown. "I didn't know you shouldn't wear forest green in May in Katy, Texas." And the hair--which she calls a shame--can be summed up in three words: "Eighties, curling iron, hairspray. I defied Mother Nature and all her humidity with every ounce of tenacity and hairspray I had. I shellacked my bathroom countertops with the residual spray."

Her Ever-Changing Hair:
"It's still attached to my head, by the grace of God," laughs the star, who has gone from brunette to blonde and everything in between. She describes the transition as "Ronald McDonald red, faded to pumpkin, then it was pink, then mango."

[ Watch Renee's Look Change Over the Years ]

Her "Leatherheads" Director and Co-Star, George Clooney:
"I heard George was making a movie and I said, 'When?' If he had asked me to make peanut butter sandwiches for the catering, I would have said, 'Crunchy or smooth?' It's never less than great with him. People want to make an effort for him," says Renee.

Her Profession:
"I like the struggle of my work," she confesses. "I like when you're shooting in 47 degrees below zero and everybody looks the same--like a stack of big black tires with Herman Munster boots on--and it's hilarious and we're getting done what we'd hope to do that day. That's gold."

[ Check Out Hot Hollywood Beauty Trends ]

Having a Low Day:
"I'm fortunate; I think I was born happy," says the optimist. "If I have a bad moment, it doesn't take me long to switch the gear back. I say, 'That sucked,' and move on."

To read Renee's complete interview, pick up the April issue of In Style, available on newsstands now.