Britney Spears turns 28 today. Erin Callan, the former CFO of Lehman Brothers, is turning 44. Lucy Liu is 41. Stone Phillips is turning 55. Senate Majority Leader Harry Reid is 70. Real estate marketing queen Louise Sunshine is turning 69. Nelly Furtado turns 31. Foo Fighters bassist Nate Mendel is turning 41. Author George Saunders is 51. And tennis legend Monica Seles celebrates her 36th birthday today.