Jon Gosselin and his latest girlfriend Ellen Ross walked the mean streets of Manhattan Friday, and we couldn’t help but notice that Jon has gotten more than a little plump.

Ironically, we found Jon’s ex-wife Kate – looks firm and fabulous -- carrying a tote bag covered with the words NEW YORK just this morning as she shopped near her home in PA.

Jon and Ellen strolled hand-in-hand during their visit to the Big Apple.  The two began dating earlier this year.  Maybe they dine out a lot?