Kelsey Grammer Engaged, Though Not Yet DivorcedKelsey Grammer has found his soon-to-be fourth wife in 29-year-old girlfriend Kayte Walsh, reports.

"They are engaged. They never really announced it," rep Stan Rosenfield tells Radar. "They are very happy and very much in love."

Walsh was spotted with a diamond engagement ring in Washington, DC over the weekend. Grammer, 55, and his fiancee were guests at the Kennedy Center Honors gala.

In July, Grammer's third wife, Camille Donatacci, filed to end their 13-year marriage, citing irreconcilable differences. The divorce has not yet been finalized. Donatacci, a 41-year-old former Playboy model and dancer, has two children with Grammer, 9-year-old daughter Mason and 6-year-old son Jude.

"You don't have to be officially divorced to get engaged -- at least that's how Kelsey Grammer sees it, and he's given Kayte Walsh a gorgeous diamond ring to prove it," RadarOnline creator and executive vice president David Perel tells PopEater. "They both look so happy and we hope it works, but for those of you keeping score, this will be Kelsey's fourth marriage!"