LOS ANGELES (AP) -- Known for getting rings, Phil Jackson finally has given one as well.

The retired coach, who won 11 NBA titles with the Los Angeles Lakers and Chicago Bulls, is engaged to longtime girlfriend and Lakers executive Jeanie Buss.

Buss posted a picture Thursday night on her official Twitter account of her left hand with a diamond ring on her finger.

The accompanying tweet read "Twitter family - Phil finally gave me that ring I wanted!'' followed by a smiley face.

Buss later confirmed the engagement to ESPN.com, saying she received the ring at Christmas and she's "beyond happy.''

The 67-year-old Jackson and 51-year-old Buss have been dating since 1999.

Jackson nearly returned to the Lakers in November, but the team opted for coach Mike D'Antoni.