Britney and Jessica Simpson run into each other at the teen choice awards.

Britney met Melissa Joan Hart when she guest starred on “Sabrina the Teenage Witch.”  They became such good friends that Britney asked Melissa to appear on her music video “Crazy.”

Ed McMahon hosted Star Search when Britney appeared on it.  When they saw each other again they acted as if they were old friends.

Justin Timberlake and Britney have always been great friends since they appeared on the Mickey Mouse Club together.  Britney also opened for N’Sync on their tour, a few years back.