04/16/2009 AT 11:25 PM EDT
Suri Cruise celebrated her third birthday with a small gathering of friends and family at home in Los Angeles Thursday afternoon, PEOPLE has learned.
Parents Tom Cruise
and Katie Holmes
planned a princess-themed party for their daughter, which included a cake featuring Belle from Beauty and the Beast
and a treasure hunt.
"They just wanted to keep it small and make it fun for Suri and her friends," says a source.
– Julie Jordan