Jason Priestley accidentally derailed a segment with former co-star Jennie Garth on 'Access Hollywood Live' (weekdays, syndicated).

Priestley's microphone was open during Garth's interview, and he can be heard chatting with costumed individuals meant to celebrate a countdown to the royal wedding.

We all know that Beverly Hills 90210 is coming back. And now there are rumors swirling that actress Jennie Garth may be part of it. She played Kelly Taylor on the original series in the 1990s.

Garth, who appeared on Dancing With the Stars last season, was recently cast in a lead role for a new CBS sitcom called My Best Friend's Girl. The show is about two guys -- best friends -- whose relationship becomes complicated when one of them begins dating the other's ex-wife. Garth was cast as the ex-wife.