Lindsay Lohan makes the most of the New York nightlife but insists she is staying sober

She sparked concern when she was seen enjoying the delights of New York's hottest nightclubs earlier this week.But now Lindsay Lohan has come forward to insist that while she has been making the most of Manhattan's nightlife, she has remained sober while doing so.The 24-year-old actress was photographed at various venues around the city including parties at the 1-Oak nightclub and the Simyone