1 / 18

Tia Mowry and Tamera Mowry: July 6 - America's favorite twins celebrate their 35th birthdays. (Photo: Jason Merritt/Getty Images)

2 / 18

Missy Elliott: July 1 - The "Work It" rapper is still one of the baddest chicks in hip hop at 42.(Photo: Rick Diamond/Getty Images for BET)

3 / 18

Henry Simmons: July 1 - The NYPD Blue actor turns 43. (Photo: Michael Buckner/Getty Images)

Photo By Photo: Michael Buckner/Getty Images

4 / 18

Pamela Anderson: July 1 - The iconic bombshell is still in pinup shape at 46. (Photo: Alberto E. Rodriguez/Getty Images)

Photo By Photo: Alberto E. Rodriguez/Getty Images

5 / 18

Carl Lewis: July 1 - The Olympic gold medalist in track and field turns 52. (Photo: Michael Loccisano/Getty Images) 

6 / 18

Evelyn "Champagne" King: July 1 - The "Shame" singer celebrates her 53rd birthday. (Photo: Steve Snowden/Getty Images)

Photo By Photo: Steve Snowden/Getty Images

7 / 18

Andre Braugher: July 1 - The Emmy-winning star of Homocide: Life on the Streets turns 51. (Photo: Jason Kempin/Getty Images)

Photo By Photo: Jason Kempin/Getty Images

8 / 18

Lindsay Lohan: July 2 - The troubled actress is spending her 27th birthday in rehab. (Photo: Valerie Macon/Getty Images)

Photo By Photo: Valerie Macon/Getty Images

9 / 18

Monie Love: July 2 - The UK-born MC celebrates her 43rd birthday. (Photo: Ray Tamarra/Getty Images)

Photo By Photo: Ray Tamarra/Getty Images

10 / 18

Montell Williams: July 3 - The popular talk show host and multiple sclerosis survivor turns 56. (Photo: Tom Donoghue/PictureGroup)

11 / 18

Tom Cruise: July 3 - The recently single megastar looks impossibly young for 51. (Photo: Andreas Rentz/Getty Images for Paramount Pictures)

12 / 18

RZA: July 5 - The Wu-Tang Clan frontman and Man With the Iron Fists director turns 44. (Photo: Craig Barritt/Getty Images)

Photo By Photo: Craig Barritt/Getty Images

13 / 18

Judge Joe Brown: July 5 - The reality TV judge celebrates his 66th birthday.  (Photo: David Livingston/Getty Images)

Photo By Photo: David Livingston/Getty Images

14 / 18

Della Reese: July 6 - The iconic singer and Touched By an Angel star turns 82. (Photo: Stephen Lovekin/Getty Images)

15 / 18

50 Cent: July 6 - The rap superstar is gon' sip Bacardi like it's his 38th birthday. (Photo: Stephen Lovekin/Getty Images)

16 / 18

Cree Summer: July 7 - The Canadian American actress and star of A Different World turns 43. (Photo: Frederick M. Brown / Getty Images)

Photo By Photo: Frederick M. Brown / Getty Images

17 / 18

D. Woods: July 6 - The former Danity Kane member turns 28. (Photo: David Livingston/Getty Images)

18 / 18

Cassidy: July 7 - The "Birthday Cake" rapper will blow out his own candles when he turns 31 this week.(Photo: Andrew H. Walker/Getty Images)