Robert Pattinson and Kristen Stewart Celebrate a Birthday

Kristen Stewart, Robert Pattinson and Katy Perry

updated 03/21/2013 AT 1:50 PM ET

originally published 03/21/2013 AT 2:10 PM ET

Robsten fans have a lot to cheer about!

Following a sighting at a karaoke bar in Los Angeles, Robert Pattinson and Kristen Stewart stepped out together again Wednesday night, joining Katy Perry at a birthday dinner for the singer’s assistant, Tamra Natisin.

In a six-second video posted online, Perry, in a striped shirt, leads the table in singing “Happy Birthday” to Natisin, and presents her with a chocolate cake while Stewart appears to snap a photo of Pattinson, who is seated near the birthday girl.

It was a fun night night out with friends for Perry, who recently split with John Mayer after dating for seven months.


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