Help, I Love Twins

Help, I Love Twins is a 1969 West German comedy film directed by Peter Weck and starring Roy Black, Uschi Glas, and Eddi Arent.
It was shot around Wörthersee in Austria.

Synopsis

A budding photographer receives an assignment to photograph a top model while she on holiday. Confusingly, however, her twin sister works at the hotel where she is staying.