Wimbledon champion Petra Kvitova has been named WTA player of the year.
The 21-year-old Czech began the year ranked 34 in the world before she won her maiden Grand Slam beating Maria Sharapova at Wimbledon in July.
Germany's Sabine Lisicki won Comeback player of the year after she reached the semi-finals at Wimbledon.
"This season has been simply a dream," Kvitova said.
"It is an incredible honour to win the player of the year award and join the ranks of some of the best players that have ever played the sport, especially Martina Navratilova.
"I will always cherish the 2011 season and look forward to building on it."
Kvitova was also named most improved player and was further honoured with the Karen Krantzcke Sportsmanship Award, which acknowledges a player's professionalism, attitude and sense of fair play.
Her fourth prize was the fans' award for favourite breakthrough player.
Lisicki's award for comeback player of the year was due to her run to the last four at Wimbledon, winning titles in Birmingham and Dallas, and reaching a career high 15 in the world rankings.
Kveta Peschke of Czech Republic and Slovenia's Katarina Srebotnik won the award for doubles team of the year after they won six tour titles, including their first Grand Slam title at Wimbledon.
Romania's Irina-Camelia Begu won newcomer of the year after a season that saw her rise from 214 in the world to a high of 38.