Christina Perri & Colbie Caillat join forces!

There's nothing like a Summer tour to bring together two of the biggest names in pop music. Get ready to let your hair down because Christina Perri and Colbie Caillat are joining forces for the Girls Night Out, Boys Can Come Too Summer Tour! Between them, they've sold over 10 million in single sales, not to mention garnered multiple awards; Caillat already has two Grammy Awards under her belt.

Each songstress shares a wholesome, fresh-faced take on pop music that focuses on love (see Perri's single Jar of Hearts) and empowerment (see Caillat's powerful video for song Try). Caillat channels her Malibu heritage into her acoustic beachy anthems, while Perri has an edgier, more rock orientated sound; together they're the sound of Summer 2015!