that movie from the 80s with the shirtless girl on the cover

Alex Owens, a young woman juggling between two odd jobs, aspires to become a successful ballet dancer. Nick, who is her boss and lover, supports and encourages her to fulfil her dream.

The story begins at a big football game where Snoopy wins a game from Peppermint Patty's team. That night, Snoopy gets out a radio, learns some 80's dance moves, and becomes Flashbeagle.