PALM SPRINGS, Calif. (AP) _ Movie costume designer Helen Rose, who won Oscars for ''The Bad and the Beautiful'' and ''I'll Cry Tomorrow,'' has died following a long illness. She was 81.

Mrs. Rose, nominated 10 times for Academy Awards, designed costumes for more than 200 films in the '40s, '50s and '60s before opening her own costume business in 1966. She died Saturday at her Palm Springs home.

She designed the ''cat'' cocktail dress for Elizabeth Taylor in the 1958 movie ''Cat on a Hot Tin Roof,'' and offscreen, she made the wedding gown for the 1956 marriage of Grace Kelly to Prince Rainier of Monaco.

''She dressed the finest and most famous stars in the business,'' said Georgiana Jordan, a Palm Springs fashion designer who knew Mrs. Rose for more than 30 years. ''But besides being a beautiful designer, she was also a very nice lady.''

Mrs. Rose began her designing career as a teen-ager, creating costumes for nightclubs, speakeasies and stage shows in Chicago during the '20s.

Her first Academy Award came in 1952 for ''The Bad and the Beautiful,'' which starred Lana Turner and Kirk Douglas. The second was in 1955 for ''I'll Cry Tomorrow,'' starring Susan Hayward.

About seven years ago, Mrs. Rose started the Helen Rose Show, a charity fashion show which featured 30 of the original costumes she designed while at MGM.

Mrs. Rose also wrote two books - ''Just Make them Beautiful'' and ''The Glamorous World of Helen Rose'' - and contributed newspaper columns to the Palm Springs Desert Sun.

A private memorial service was planned, but arrangements were not announced.