Jon Gosselin Cleans Out Kate's Bank Account

Is Jon Gosselin smiling because he's spending Kate's money?

Kate Gosselin gets overdraft notice when $200K goes missing from checking.

Lawyers are investigating a case to confirm whether Jon Gosselin removed hundreds of thousands of dollars from Kate Gosselin's bank account this weekend.

The alleged withdrawl would have occurred in serious violation of a court order that protects the Gosselin family's joint bank account. Kate hired power Hollywood lawyer Marty Singer to handle the case -- singer told Radar Online regarding Jon and his lawyer Mark Heller: "We will be looking into potential claims against Mr. Heller if he had any involvement with the violation of the court order."

Singer went on to call the action "disappointing" and "ugly," and threatened Jon Gosselin and his council with the following: "We demand the immediate return to the account of all monies improperly withdrawn by your client.  If you and your client fail to comply with this demand, you do so at your peril."

It's reported Jon may have used the money this weekend in Los Angeles, where he showed up as a spokesperson for a family restaurant called Millions of Milkshakes sporting fancy new highlights in his hair and a new cut.

Looks like it's going to be another nasty week for the Gosselins. Click here to read about the tantrum Jon threw last week that also required Kate to involve her lawyers

and here for TLC's shocking response to Jon's demand to stop the show.