On the family-entertainment front, the Theatre for Young Audiences series at Costa Mesa's South Coast Repertory features real-life twins Alex and Graham Miller as the two identity-switching tykes in Jonathan Bolt's adaptation of the Mark Twain classic The Prince and the Pauper (February 9-25). Children can venture into Mad-Hatter mayhem in the musical Alice and the Wonderful Tea Party at the Santa Monica Playhouse (February 17-June 10).