Join the famous olivia newton - john for a workout with Smiffys adult women's let's get physical fancy dress costume. A see through pink crop top. Costume. easy let's get physical costume: knit leg warmers, headband, leotard and tights. Explore Olivia D'abo, Nostalgia, and more! Olivia newton john. This costume will make you stand out at all of your up and coming fancy parties, 80s Let's Get Physical Fancy Dress Costume Olivia Newton John Workout Fun.