Seen on the Downtown Christmas scene, from above left: the window at Horseshoe Bar (a.k.a. Vazac’s), at Seventh St. and Avenue B; shops like Fantasy Land on Seventh Ave. South and Crazy Fantasy on Sixth Ave. featured sexy Christmas fashions; a tree seller on Essex St. wrapped it up for another year, gathering up stray branches; a woman’s dog sported a seasonal collar in the East Village.