Kenny Chesney turned the big 4-0 last week, and the country superstar rang in his fourth decade in style. The guest list at his private birthday party in Nashville included New York Yankees pitcher Roger Clemens, NASCAR legend Sterling Marlin and New England Patriots linebacker Junior Seau, not to mention a slew of musicians. Tim McGraw, Faith Hill, Dierks Bentley, Kellie Pickler, Kix Brooks and Sugarland's Jennifer Nettles were also part of the 200+ party-goers.

At the bash, Chesney was given a birthday gift that left him almost speechless. Friends presented him with a leather-bound book of letters written from friends including Keith Urban, Peyton Manning and Eva Longoria.
"I can tell you right now. I haven't even started reading this yet, and I already know that it's my favorite birthday present ever," Chesney told his guests.