Fashionable Cassini is a fashion brand founded by Oleg Cassini, a Russian-American fashion designer. The brand was established in the 1950s and has become a symbol of classic American style. Oleg Cassini was known for his designs for Jacqueline Kennedy during her time as First Lady. His designs were often seen on the red carpet and in Hollywood films. The brand is still popular today and is known for its timeless elegance.