"Wilson Phillips: Still Holding On" -- premieres Sunday, April 8 at 9/8c on TV Guide Network. Follow TV Guide Network on Facebook at: www.facebook.com With the band's managers worrying that the girls aren't ready to tour, Chynna hosts a fundraiser for the Los Angelitos orphanage. With little time to prepare, Wendy volunteers to cater the event, but did she bite off more than she can chew?