Robert Pattinson apparently helped Kristen Stewart celebrate turning 21 by embarrassing her and getting the whole party to sing Happy Birthday.
The couple were joined by the Twilight cast and crew for Kristen's birthday party at Rockwell's Bar and Grill in Squamish, Vancouver, Usmagazine.com reports.
After enjoying oysters and canapes, Kristen was presented with a chocolate cake at around 10pm and Robert, 24, led the party in singing to her.
A source said: "You could tell she was so embarrassed but in a cute way! Everyone was in a good mood, but it was a bittersweet night (as filming on Twilight: Breaking Dawn Part II is almost complete)."
Kristen was reportedly treated to a motorcycle by her co-stars.
The insider said: "Rob was so excited for Kristen and they each took turns riding it.
"Kristen learned to ride a dirt bike in New Moon so they thought it would be appropriate. Rob was supervising as she sat on it to make sure she was OK."