WOW & Keana MIX IT UP For Menchie’s By on September 19, 2009 Teen pop boy band WOW & Keana Texeira serve up yogurt and Popstar! magazines to fans last night at Menchie’s grand opening in Chatsworth, CA on September 18. Photos: Terri Tex, T2PR. What is YOUR favorite FROYO SHOP? No related posts.