STUNNING Stephanie Seymour will have to get by on just $270,000 a month — at least until her nasty divorce from polo-playing pony breeder Peter Brant is finalized. A Connecticut judge ordered Brant to start coughing up the dough last week. According to the Con necticut Post, the court also cited his continued fury over his wife’s thorough bred spending habits. Brant, who nets an estimated $1.55 million a month, has com plained he can’t fathom why Seymour pays retail at Berg dorf’s, when she could get by with discounted duds from family pal Azzedine Alaia.