British tennis star Andy Murray finally won his first Grand Slam title on Monday. Sept. 10 and his girlfriend Kim Sears joined thousands in the audience to witness him acquire his biggest win to date.

Sears, who has been dating Murray since 2006, watched Murray beat Novak Djokovic in a five-set game in Flushing Meadows, Queens. He is the first British men's tennis player to win the US Open since Fred Perry almost 80 years ago.

The British beauty is a college graduate who lives with Murray in England. She is the daughter of tennis coach Nigel Sears who has has always been supportive of Murray in the past six years. The 24-year-old is a well-known fixture at his many tennis matches around the world.

The couple has been dating for years after originally meeting at the 2005 US Open. At the time, Sears was only 17 and was studying drama, music and art before heading to the University of Sussex in Brighton, where she studied English literature.

Murray and Sears reportedly broke up around 2010, but their relationship has been consistently strong since, and rumor has it they may be looking to tie the knot after Wimbledon in 2013.

One thing fans know for sure about Sears is that she is passionate about pets. Not only does she run a Twitter account for her own pooch, but she's also made a successful stake in the art world by painting portraits of animals like dogs, cats and horses. Her work can be seen at her website.

Before Murray hit the US Open court, Sears supported him at the 2012 Olympic Games in London, when Murray took home the gold medal for Team Britain in the men's singles tennis competition.

Andrew "Andy" Murray is ranked No. 4 in the wold by the Association Of Tennis Professionals.