Dr. Jekyll and Ms. Hyde

Dr. Jekyll and Ms. Hyde is a 1995 BritishAmerican comedy film starring Tim Daly, Sean Young and Lysette Anthony. The film is based on Robert Louis Stevensons classic horror novel Strange Case of Dr. Jekyll and Mr. Hyde. The story takes place in modern times and concerns a bumbling, young chemist who tampers with his greatgrandfathers formula, accidentally transforming himself into a beautiful businesswoman who is hellbent on taking over his life.

Monitoring his vital stats after ingesting the formula, he gives up and attends a job interview. Although everything appears normal at first, Jacks voice begins to crack, his nails grow longer, and the hairs on his arms recede into his skin. Jacks then feels a strange sensation in his groin area and watches in horror as his manhood disappears. Still in denial, Jacks tries to continue the interview until he is informed that his hair has grown. Jacks tries to leave, but starts to develop breasts. Embarrassed, Jacks flees back to the lab, leaving his interviewer speechless. Back in his office, the final stages of the transformation into a woman take place.The new female alterego names herself Helen Hyde Sean Young and introduces herself as Jackss new assistant. Helen quickly develops a personality independent of her creator embracing womanhood to its fullest and is actually quite likeable she rewrites Jackss reports, is kind to his secretary, and lovingly flirts with his superiors. Over the next few days she rewards herself with a shopping spree and befriends Jacks fiancee, Sarah Lysette Anthony, but has Sarah move out of Jacks apartment so she can have it for herself. Hyde is happy with her new identity but soon transforms back into Jacks. ........

Source: Wikipedia