Dichen Lachman (born 22 February 1982) is an Australian actress notable for appearing in Australian soap opera Neighbours as Katya Kinski and American drama Dollhouse as Sierra. Lachman was born in Kathmandu, and lived in Nepal until she was seven years old, before her family moved to Adelaide, Australia. She is of Australian and Tibetan descent. Before Neighbours, Lachman filmed an advert for Wanadoo telecommunications which was filmed in Australia and aired in the United Kingdom. She attended Norwood Morialta High School, Annesley College and the University of Adelaide in Adelaide, where she grew up.