Phil Jackson and Jeanie Buss are engaged

Phil Jackson, 67, and Jeanie Buss, 51, have been dating since 1999 and live together in Playa del Rey. Vince Bucci/Getty Images

Phil Jackson may not have signed on for another run as coach of the Los Angeles Lakers, but he's about to join the Laker family nonetheless.

The 11-time NBA champion coach popped the question to his longtime girlfriend, Lakers executive vice president Jeanie Buss, over the the Christmas holiday, and she accepted.

On Thursday, Buss tweeted a picture of a diamond ring with the caption: "Twitter family -- Phil finally gave me that ring I wanted ! :-) "

"I'm beyond happy," Buss told ESPNLosAngeles.com. "I really didn't want it to be news, but I knew people who followed me on Twitter cared about it and I've been wearing the ring since Christmas, so I figured I should let people know."

To read the rest, check it out here on ESPNLosAngeles.com.