Conan O’Brien leads the celebrity birthdays on April 18. The comedian and host of NBC’s The Late Night Show with Conan O’Brien turns 45 on Friday.

Actor James Woods is celebrating her 61^st birthday, along with Oscar-winning actress Hayley Mills, who turns 62.

Actor Rick Moranis, best known for his role in Honey, I Shrunk The Kids, turns 55 today, while Will & Grace actor Eric McCormack turned 45.

Ugly Betty star America Ferrara is 24, while actress Melissa Joan Hart is 32.