puppy fat BrE informal
baby fat AmE informal

He had a bright open face with just a little baby fat.

Then we were sent home, and I married a pretty girl who was covered with baby fat, too.

A few days in the wilderness and all baby fat is gone.

Male or female, they all seemed barely out of their baby fat these days.

She was only thirteen and still had baby fat to lose.

"I lost the baby fat in my head," he told her.

When he got contacts and lost some of his baby fat, the boy would look just like the man beside him.

Old age had given him back his baby fat and the same look of grave curiosity.

Any young quarterback with a name to know has turned his baby fat into muscle mass.

My wife and I had lost our baby fat.