Billy Joel and Katie Lee Joel

May 4: Singer Billy Joel and wife, Katie Lee Joel, arrive for the Metropolitan Museum of Art Costume Institute Gala, "The Model As Muse: Embodying Fashion" in New York. Joel and Lee announced their separation Wednesday after 5 years of marriage. (Reuters)

October 23: Billy Joel sings during a visit to the National Press Club in Washington. (AP)

February 22: Chef Katie Lee Joel, wife of singer Billy Joel, poses as she arrives at the 2009 Vanity Fair Oscar Party in West Hollywood, California. (Reuters)

December 2008: Author and entertaining expert, Katie Lee Joel, stops by the Betty Crocker Kitchens to help celebrate the announcement of America's Favorite Chex Party Mix recipe. (AP)

September 20, 2004: Billy Joel receiving his star on the Hollywood Walk of Fame with his fiancé, Katie Lee (AP)

June 6, 2004: Billy Joel, with his daughter, Alexa Ray Joel, and girlfriend, Katie Lee at the Tony Awards (AP)

June 8, 2003: Billy Joel and Katie Lee at a movie premiere (AP)

June 8, 2003: Billy Joel, with his daughter, Alexa Ray Joel, and girlfriend, Katie Lee (AP)