Kate Walsh is making it official!

A mere four months after the former Grey's Anatomy actress (and the current Private Practice star) became engaged to film executive Alex Young, the two will tie the knot Labor Day weekend.

That's this weekend!

Kate Walsh, 39, who played Dr. Addison Montgomery on Grey's Anatomy and will reprise that role in a new setting in Private Practice, will marry Alex Young, 36, at the Ojai Valley Inn and Spa in California.

Former Grey's Anatomy co-stars Sara Ramirez and Katherine Heigl, both good friends of Walsh, will reportedly attend the three-day event.

As always, Kate Walsh and Alex Young aren't doing things by the book.

They dated only a short while before getting engaged, then bought a new place together, and now are making it official - while she's in the middle of filming Private Practice.

Just the same, congratulations to Kate and Alex, and we'll be passing along any more information we get about the wedding to you ASAP!

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