Friday, Private Practice was officially picked up.

But the new show's star, Grey's Anatomy actress Kate Walsh. now has even an even bigger reason to celebrate. In addition to getting her own prime-time TV series, she's getting married!

The 39-year-old actress confirmed Tuesday that she's engaged to boyfriend, Alex Young, a production co-president at 20th Century Fox.

Walsh flashed her Neil Lane Jubilee-cut diamond to People magazine and said that Young proposed last week in San Francisco.

So what makes her fiancé so special?

"Oh, everything," she gushed at the Entertainment Weekly upfront party at The Box in NYC. "He's the most amazing man I ever met."

Kate Walsh, who has kept her love life under wraps for much of the past year, was recently seen in public Young at an April 28 fund-raiser for Barack Obama in Los Angeles.

ABC this week formally announced that Walsh will star in her own Grey's Anatomy spinoff, playing Dr. Addison Montgomery in Private Practice.

The show will air Wednesdays this fall and co-star Taye Diggs, Tim Daly, Amy Brennemann and others.

Congratulations, Kate! Walsh's engagement is the third of the Grey's Anatomy world in the past year, following co-stars Ellen Pompeo and Katherine Heigl.

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.