who was the young ballerina in white christmas

Oh, you mean Rosemary Clooney. She was a famous American singer and actress who appeared in the 1954 movie "White Christmas" alongside Bing Crosby and Danny Kaye. She played the role of a young ballerina named Judy Haynes, who falls in love with Bing Crosby's character, Bob Wallace. The movie is a classic holiday film that has become a staple of the Christmas season. Rosemary Clooney was a talented performer and a beautiful woman, and her portrayal of Judy Haynes added a touch of glamour and romance to the film.