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He may look ruggedly hot in a full beard and mustache, but we miss seeing Jake Gyllenhaal's beautiful face!

The Prince of Persia star was all smiles as he enjoyed a Sunday stroll with a friend in LA's Los Feliz neighborhood -- he even managed to give us a few waves!

Meanwhile, Gyllenhaal received a bit of good news last week -- he's going to be a new uncle again! The actor's big sister Maggie is expecting her second child with actor/hubby Peter Sarsgaard -- they have a 5-year-old daughter, Ramona.

Congrats to the Gyllenhaal fam!