Carrie Underwood wants everyone to know she is not pregnant! The newlywed says she has a sure-fire way to steer clear of those pesky baby bump rumors that plague plenty of celebs her age.

"[I] choose my wardrobe differently, because when I wear something a little baggier, I'm like, nope, people are going to think I'm hiding something, so I better not wear that," she explains to People. "So it does make me kind of think a little extra."

Carrie says it will be awhile before she and her husband, Nashville Predators hockey player Mike Fisher, add to their brood. "I don't want people assuming that I am [pregnant] until I say that I am," she insists. "We just got married. We haven't been married a year yet. I would want to be married for a little while [before having kids]."

Carrie definitely looked svelte -- and not pregnant -- at last night's ACM Awards show, when she rocked the house in a duet with Aerosmith frontman and 'American Idol' judge, Steven Tyler. The blond beauty can also be seen on the big screen later this week, when she makes her acting debut in the new film, 'Soul Surfer,' which hits theaters April 8. See a preview here.

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