London[UK], Aug. 27 (ANI): After throwing a rocking birthday bash at Hollywood celebrity club, pop superstar Justin Bieber took his new flame Sofia Richie on a vacation post her special day. The 'Sorry' singer and his model girlfriend, who recently turned 18 were spotted at Van Nuys Airport in Los Angeles in a matching grey and white tracksuits boarding a private jet, reports The Mirror. The Blonde beauty also shared flirty pictures of the couple on her Snapchat account and captioned it 'getaway'. In another video, the 22-year-old crooner was seen all excited, running up and down the gangway of the plane, Sofia jokingly describes him as "mental". The couple confirmed their romance two weeks ago. (ANI)