Valerie Bertinelli: Chunk Change

7/19/2007 12:49 PM PDT BY TMZ STAFF
One day at a time, Valerie Bertinelli has been plugging away (and plugging) on her Jenny Craig diet.

On Wednesday, the, 47-year-old divorced mother of one put on a modest one-piece suit and jumped into the Hawaiian surf with boyfriend Tom Vitale.

It's alleged that Val has dropped 28 pounds on the diet.

Congratulations! Lookin' goodish!