Serena Williams has won 15 Grand Slam titles as a singles player. In addition, she has won 13 doubles titles and an additional 2 titles in mixed doubles.
Serena has won 12 doubles Grand Slams with her sister Venus.
venus has won seven titles. he sister Serena has won 11
She just won her fourth recently
Serena Williams has currently won 13 Grand Slam double titles with her sister, Venus Williams. They have both, however, won many more competitions on their own. Currently they are unbeaten in the Grand Slam finals.
As of January 2017, Serena Williams has won 23 Grand Slam singles titles and 14 Grand Slam doubles titles. She has earned 67 overall career titles. On January 28, 2017, Williams passed Steffi Graf for the most women's Grand Slam titles (23) in the Open Era. Margaret Smith Court won 24 titles, most of them at a time when only amateurs could play in events.
According to my research she won her fourth on June 5 2010
Venus Williams has won seven women's Grand Slam singles titles.
17 grand slams wow
I really don't know why dom't you ask that to serena kiding about well about 150
Combined they have 21 singles grand slam titles (Serena winning 14 and Venus winning 7), and 13 grand slam titles in doubles together, winning 2 US open titles, 4 Australian open titles, 2 French open titles, and 5 Wimbledon titles.