You can always rely on Katie Holmes to work her magic on Lanvin. In town for a quick press trip to promote “The Romantics,” out Friday, Katie sported a Lanvin leopard print taffeta trench coat ($3,990) from the Fall/Winter 2010 pre-collection accessorized with a “Happy” bag in mastic crinkled calf-skin ($2,175) also from the FW10 collection while visiting the “Late Show with David Letterman” on Tuesday. Leopard, in case you’ve been living under a rock, is a massive trend for fall–I turned on my news the other day and three different female anchors were wearing leopard print blouses. Oh my! I love that she paired it with a pair of clean, nude heels; they look is at once polished and on point.