As the girls continued to set up for Olivia's co-ed sleepover/ pool party, they could not get Onni, Olivia's twin sister and Katie and Julie's mutual best friend out of their minds. Instead of being in Atlanta celebrating her birthday with her twin sister, best friends, and good friends, Onni was in Los Angeles living with her and her sister's favorite Aunt, and filming her t.v. show. Even though Olivia and everyone else were super proud of Onni, it did not change the fact that they missed her, especially today.Unbe-knowst to them, and the rest of their good friends who would be attending the party tonight, Onni was on a flight home to Atlanta for the night to surprise her sister for her birthday.
