Here's a look at some notable birthdays being celebrated today:

John Mayer
Age: 36
Occupation: Singer, Songwriter, and Musician
Known For: Songs such as 'Your Body Is a Wonderland, his guitar playing skills, and his reputation as a player and subject of Taylor Swift songs

Tim Robbins
Age: 54
Occupation: Actor, Screenwriter, and Activist
Known For: Roles in films such as 'The Shawshank Redemption,' winning an Oscar for his performance in 'Mystic River,' and his longtime former relationship with actress Susan Sarandon

Suzanne Somers
Age: 66
Occupation: Actress, Author, and Entrepreneur
Known For: Her role as Chrissy Snow on 'Three's Company,' her series of best-selling self-help books, her many different product lines, and her wacky presentations on the Home Shopping Network

Kellie Martin
Age: 37
Occupation: Actress
Known For: Her role as Corky's sexy sister on 'Life Goes On,' Lucy Knight on 'ER,'and her many guest starring roles on TV, most recently as Army Captain Nicole Galassini on 'Army Wives'