Jeff Timmons -- Six Degrees of Kevin's Bacon

4/15/2011 4:02 AM PDTby TMZ Staff Former 98 Degrees singer Jeff Timmons just joined the cast of Chippendales -- but WON'T be stripping? Why don't HOT male celebs ever get naked? And no, Kevin Bacon doesn't count.Check out TMZ on TV -- click here to see your local listings!