Leslie was the girlfriend of incredibly talented and equally insensitive method actor, Mike Shiner. An actress herself, Leslie is unhappy with her boyfriend very insecure despite possessing an obvious flair. She does find comfort in Laura, who's acting in the same play as her and Mike.
After Mike tried to really have sex with her on stage, Leslie dumped him and broke down emotionally in her green room. Laura consoled and hugged her, while the director/star of their play gave her a confidence boost whilst inadvertently insulting Laura. After Riggan (the director), Leslie repeated the words of kindness she's just received to Laura and they shared a laugh.
They held hands with which Leslie was content, but she noticed Laura was gradually getting closer to her. Clearly tense, Leslie was dumbfounded when Laura kissed her. It took Leslie a few seconds to process it, but when she did, it was revealed she liked it and wanted it again. Laura obliged and the two pashed vigorously, with Leslie moaning in delight. When Mike interrupted them, Leslie cursed him out and threw a hairdryer at him.
- Leslie is one of two Females to not close their eyes for the kiss (the first part of it, anyway), the other is Samantha James
- There is a fan theory that Leslie is actually Betty Elms from Mulholland Drive, as both are gay actress. The theory goes on to say that being kissed by Laura "reawoke" her repressed feelings