Today is the day!
To get her fans extra excited, the 19-year-old teased some of the goodies to Snapchat on Thursday. Take a look (below):
[Image via Instagram.]
Oh hell to the no!
Rather than wearing something demure like her sister, Serena opted for a black catsuit that was far from flattering.
It also gave her a bad case of camel toe, which is never OK.
[Image via Mr Blue/WENN.]