Best looks of the week: Serena serves up new hair style

It's December, which means the world's top players are spending less time on the court and more time vacationing around the globe. These are some of the best looks of the week.

1

Serena Williams

2

Sania Mirza

3

Gael Monfils

4

Priscilla Hon

5

Karolina Pliskova

6

Stefanos Tsitsipas