Diddy: Making the Waistband

12/10/2008 5:01 PM PST BY TMZ STAFF
It's crunch time for Sean "Puff Daddy/P.Diddy /Diddy" Combs.

The 39-year-old put on his best bumble bee workout gear and performed core exercises. The rap mogul knows the one battle you do not want to lose ... is the battle of the bulge.