Eva Longoria is obsessed with “working on her butt,” femalefirst.co.uk reports.

The Desperate Housewives star revealed she sticks to a special exercise regime to maintain her pert derriere.

She said: “I love doing squats in the gym. When I do them my butt beefs up and I fill out my jeans better.

“I’m constantly working on my butt because of, you know, gravity.”

The 33-year-old actress — who married basketball star Tony Parker last July — fears it will become harder to keep her bottom in trim after she has had children.

She said: “I’m nervous about what’s going to happen back there when I have children. I’m full of fear. I don’t want anything happening to the butt.”

Eva has frequently expressed her desire to start a family.

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