Kevin Federline turned heads at a California sporting event Monday.

But it wasn't over his golfing skills; it was over his size.

At one point at Ryan Sheckler X Games Celebrity Classic, an employee on the grounds saw Federline and remarked, "Man, that's a belly on him! That's K-Fed?!?"

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While other celebrities like Verne Troyer, Frankie Delgado and Josh Henderson participated in competitive activities, Federline, 31, spent some time with girlfriend Victoria Prince sitting on a shaded patio sipping vodka and orange juice cocktails and smoking cigarettes.

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Federline underwent scrutiny after packing on major pounds last spring.

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His ex Shar Jackson laughed off criticism.

"It's daddy weight!" she told Usmagazine.com at the time. "When you are a full time parent, sometimes you can't focus on you. If gaining a few pounds is your only problem, life's not too bad!"

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