From Wikipedia

The Golddiggers were a singing and dancing troupe that consisted of ten to twelve young women in the style of Las Vegas showgirls selected for attractiveness and talent that appeared regularly on The Dean Martin Show on TV. Their forte was choreographed tightly synchronized singing/dancing routines of them in formation, vocalizing in harmony with coordinated costuming, hairstyling, etc. to great visual effect. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.