03/13/2011 at 11:00 PM EDT
is a single girl again – and she's stepping out on the town.
The actress, who is no longer dating
her boyfriend of more than three years, Justin Timberlake
, appeared happy as she left Café Entourage in Los Angeles Saturday night.
Dressed in jeans, a leather jacket and donning a long feathery earring, Biel, 29, smiled for photographers outside Hollywood's sleek new all-night diner, where she celebrated a birthday of her younger brother, Justin.
And why not show off her gorgeous smile? A source told PEOPLE of Biel's split with Timberlake, 30, "There are no hard feelings."
Adds another source
, "There really wasn't a final straw. They're just two people who realized they wanted different things in life and were headed in different directions."