puppy fat BrE informal
baby fat AmE informal

"I had a fair bit of puppy fat to shift."

A little puppy fat on him, maybe, not much.

Then the face seemed to lose its form, becoming blurred-bursts of adolescent puppy fat?

The puppy fat had disappeared while the attractive freckles remained.

Mom had puppy fat like me when she was a girl.

Carmel had shed her puppy fat and was now very elegant.

Lost that last trace of puppy fat, she thought.

The puppy fat had disappeared from his belly and hips.

They acquire puppy fat and look like well-fattened pigs sometimes.

Even at thirteen there had been a certain lusciousness about her, despite the puppy fat.