Olivia Munn took a trip down memory lane on Thursday to share a rare photo with her sister in honour of AAPI Heritage Month.The actress looked unrecognisable in the throwback snap, which saw and her sibling, Sara Potts, posing in a kitchen while wearing áo dài – a Vietnamese national garment which is a long, split tunic dress worn over trousers.MORE: Olivia Munn scorches in string bikini as she poses poolsideOlivia appeared to be a teenager at the time and wore a red áo dài over a pair of white