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.

Perhaps hoping for an impromptu 'Beverly Hills, 90210' reunion of sorts, co-hosts Billy Bush and Kit Hoover then interrupted Garth's interview to call him over.

At first, Priestley seemed hesitant to intrude on Garth's segment, but the two eventually shared a seat and the interview went on.