CELEBRITY BIRTHDAYS (1/31/11) --JUSTIN TIMBERLAKE - 30  He gets to get with JESSICA BIEL ANYTIME HE WANTS TO. How can birthdays mean ANYTHING to a guy in this position? I mean, look at her:

--Portia de Rossi - 38  Ellen's wife; she got her start on "Ally McBeal" and then played Jason Bateman's sister on "Arrested Development".

--Anthony LaPaglia - 52 "Without a Trace" star. He's the guy HBO originally wanted for Tony Soprano, but he stupidly turned them down. And now? James Gandolfini sends him a Thank You card everytime he gets one of those big residual checks. It's true. Look it up.

--HARRY CASEY - 60  (He IS K.C. of K.C. & THE SUNSHINE BAND!  Their classic jams include "Get Down Tonight", "That's the Way (I Like It)",  and "(Shake, Shake, Shake) Shake Your Booty". He's put on a few pounds and lost some hair over the years, but he can still Shake His Booty! Hi-Yo! See what I did there? Clever, huh?