Lauren Conrad was ready for Winter weather as she headed to catch a train from NYC's Penn Station this morning. She was in the Big Apple for the first stops on her book tour. Yesterday, Lauren promoted two books, Lauren Conrad Beauty and Starstruck, at SiriusXM's Manhattan studios and a Barnes & Noble shop. Now, LC's en route to Philadelphia for the next engagement. She tweeted today, "About to hop on a train to Philadelphia! My book signing tonight is at Barnes and Noble at The Court at Oxford Valley at 7PM. Come on by!" LC's making the trek along the East Coast without her boyfriend, William Tell. He was by her side, though, for last Friday's Susan G. Komen foundation's Designs For the Cure in LA. LC and William have been inseparable lately, and their relationship is apparently quite serious. There are new reports suggesting William Tell will propose to Lauren Conrad, but time will tell if those stories prove true.