The Hale House Gala was missing one of its biggest supporters Monday in Douglas Hannant. The designer slipped in the rain before the family charity benefit and was rushed to the hospital, where a surgeon stitched a gash on his forehead. The evening was co-chaired by Alexandra Lebenthal and Hannant business partner Frederick Anderson, who assured the concerned crowd Hannant was recuperating nicely. The event honored NBC’s David Ushery, the Giants’ Justin Tuck and his wife, Lauran.