Melissa Gilbert…

is 40 today. Yup, “Half Pint” from The Little House on the Prairie. She was 10 when the show began.

Ms. Gilbert has been President of the Screen Actors Guild since 2001. (Past presidents include Ronald Reagan, Charlton Heston, Ed Asner and Patty Duke).

Some Melissa Gilbert trivia — Ms. Gilbert was the youngest person ever to receive a star in the Hollywood Walk of Fame. Dated Tom Cruise. Was in a relationship with Rob Lowe in the 80s. She is married to Bruce Boxleitner. They have a son and Ms. Gilbert has another son from a previous marriage.