The Hennessy family came together again — and for a great cause. 

The cast of 8 Simple Rules reunited Thursday in honor of their late onscreen patriarch John Ritter at the John Ritter Foundation's From the Heart event in Los Angeles.

Kaley Cuoco and Amy Davidson — who starred as the loving yet antagonistic sisters Bridget and Kerry — posed for photos alongside Ritter's wife, Amy Yasbeck, on the red carpet. Katey Sagal and Martin Spanjers, who played mom Cate and son Rory, respectively, were also in attendance at the event.