How romantic: Kat Von D and Deadmau5 are engaged, after the Canadian DJ proposed to his tattoo artist and reality star girlfriend ... over Twitter. "I can't wait for Christmas so.... Katherine Von Drachenberg, will you marry me?" tweeted Deadmau5, real name Joel Zimmerman, on Saturday. He also posted a picture of the engagement ring, which will be a black diamond buffeted by two skulls. Von D responded by tweeting simply, "!!!!!!!!!!!!!!!" followed by a declaration that she needed to "go squeeze the hell out of my fiancé!" Celebuzz reports that the two also tweeted that they were splitting up ... just five weeks ago. (Priceless line, from Von D: "But at least he made it a no-brainer to break that off.") Perhaps Jesse James' engagement spurred Kat's change of heart?
Von D wasn't the only celeb with something to celebrate this weekend: Kelly Clarkson and Brandon Blackstock got engaged, too, Celebuzz reports. Blackstock, son of Clarkson's longtime manager and stepson of Reba McEntire, has been dating the former American Idol since February. "I'M ENGAGED!!!!! I wanted y'all to know!! Happiest night of my life last night! I am so lucky and am with the greatest man ever :)," she tweeted. Click to see a picture of her ring, which is yellow. (Read more celebrity engagements stories.)