Mollie King and Frankie Sandford looked like they had a blast while making an appearance at Justin Bieber's concert.
The Saturdays beauties caught one of the 'Boyfriend' singer's concert nights at the Staples Centre in LA - excitedly documenting their fun night with their legion of followers on Twitter.
Taking to the social networking site, 25-year-old Mollie wrote: "Is it a bird, is it a plane…no it's @Justinbieber!!!", accompained with images of the jam-packed concert.
Adding: "Bieber Fever!! Oldest people here by a MILE! Hahaha! I feel ancient!"
Justin Bieber Gets Hounded By Paparazzi & Fans In London
Justin Bieber greets his fans outside the Langham Hotel in London today (Sept 12) (Photo credit: Ian Lawrence / Splash News)