SHOE-IN: Motherhood certainly hasn’t affected Kate Moss’ fashion sense. Wearing a thigh-baring Lanvin dress, London’s most stylish mom greeted Manolo Blahnik at the opening of his retrospective at the London Design Museum on Thursday. “Do I look good?” exclaimed an overwhelmed Blahnik as the cameras clicked. “I can’t believe I’m getting all this attention.” More than 300 guests — most of them in Manolos — braved an unexpected blizzard to celebrate with him.