Happy Birthday: Anna Kournikova, L.A. Reid, Michael Cera

We don't usually take note of celebrity birthdays, but we're in a particularly festive mood. So any June 7 babies take note: you share your big day with a veritable cornucopia of celebs.

Tennis star/all around hottie Anna Kournikova, who the Seattle Post-Intelligencer describes as "the most famous tennis player never to win a major singles tournament," celebrates her 30th birthday Tuesday (June 7). Kournikova retired from tennis in 2003, but she'll be joining the next season of "The Biggest Loser" as a trainer.

Newly-minted "X Factor" judge L.A. Reid is also celebrating a birthday. The record producer, who will be joined by Paula Abdul and Nicole Scherzinger behind the judges' table, is 55.

And we thought Michael Cera ("Juno," "Scott Pilgrim vs. the World") didn't age. Not true. Tuesday the actor -- who got his start on FOX's "Arrested Development" -- turned 23.

Finally, happy birthday to Tom Jones, who is 71.

Update: Somehow we missed this in our first sweep, but June 7 is also Prince's birthday. He's 53. Many happy returns.