Lauren Conrad and Derek Hough Call it Quits

It's the last dance for fashion and beauty pro Lauren Conrad and Dancing With the Stars professional Derek Hough, who have called it quits.

Their relationship reached its peak, a friend of Conrad's told Life & Style magazine. It was always casual.

Conrad only recently got out of a serious relationship. She dated My Boys actor Kyle Howard from 2008 to June of this year, Us Weekly reported.

Another source told Life & Style that Conrad did not take her relationship with the light-footed Hough too seriously.

This was a rebound that wasn't going to last, the source told the magazine. Derek never thought it would, either.

Us Weekly recently reported that Conrad had an awkward run-in with Howard, 33, at a Halloween party -- where she went sans Hough. A source said the 25-year-old beauty got flustered and ducked into the ladies' room to make sure she looked good. Conrad being Conrad, that should not have been a problem.

Conrad so far seems to be keeping mum on the breakup. There was nothing on her Twitter feed or Web site as of Monday morning that hinted at a breakup.