How Sweet!

Gossip Girl costars and real life lovers Penn Badgley and Blake Lively (aka B&B) stroll through the streets of New York together this past weekend.

The couple were snapped after leaving famed dessert place Serendipity 3.

They took time to snap pictures with fans and be obnoxiously cute together.

Are Chace and Ed gonna be pissed that B&B are getting more press than them? Power in numbers!

2 C-listers = 1 B+ celeb.

[Image by Jackson Lee via National Photo Group.]