25 things to do in O.C. this weekend

Dimendee Sellapperuma, 2, holds on as her rides a pony during the Placentia Library's Summer Reading Celebration in a past year. Relampago del Cielo dancers Melina Marin, 15, from left, Juan Lopez, Rosie Chavarria Pena, Alex Martinez, artistic director Marlene Pena-Marin, Art Velasquez and Madeline Pena, 20, rehearse for an the upcoming 40th Anniversary Concert on Saturday, August 20 and Sunday, August 21 at the Irvine Barclay Theatre.