Vodka company Svedka has reportedly pulled out as sponsors of Lindsay Lohan's 21st birthday party in Las Vegas this summer.

The actress, who has attended Alcoholics Anonymous in the past, had teamed up with the drinks company for her glitzy two-day bash on July 2, but it appears Svedka has had second thoughts about their involvement in the celebrations.

Other sponsors for the landmark birthday celebrations include Pure nightclub, Caesars Palace and the Social House restaurant at Treasure Island.