Like mother, like daughter.

Gossip Girl stars Kelly Rutherford and Blake Lively lit up at the sight of one another at an Ovarian Cancer Fundraiser Saturday in the Hamptons on Long Island.

Here's the pair of gorgeous Gossip Girl blondes ...

Rutherford, who plays Lively's on-screen mo,, just became a reallife mom for the second time only seven weeks ago when she gave birth to daughter Helena Grace.

This is the first time the two have seen each other since Rutherford left on maternity leave, and they look like things will pick up right where they left off!

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.