Complex sentence: Whilst working on "E Street" in 1993, she approached Tim Chappel as a partner to design outlandish costumes for Stephan Elliott's Australian LGBT comedy film "The Adventures of Priscilla, Queen of the Desert".
Split into simpler sentences: Whilst working on "E Street" in 1993, she began working with Tim Chappel. Together they designed outlandish costumes for Stephan Elliott's Australian LGBT comedy film "The Adventures of Priscilla, Queen of the Desert".