She and her husband, Henry, took to the dance floor along with a group of friends. They remained front and center for Jay Z’s entire set (see embedded video).
At one point she during the set she slapped her husband's read end as the couple danced to "99 Problems" and "Holy Grail."
A witness said:
It was truly bizarre to see the daughter of the 43rd President going bananas to Jay Z. She was one of the most animated people at the party and seemed to be having the time of her life. It was hilarious when she started wiggling her legs.While Bush Hager was able to get into the party, "Baby" singer Justin Bieber was denied entrance.
Reportedly, organizers did not want the 19-year-old pop superstar -- who has been in the news recently for a number of things, including an arrest in Florida and one in Toronto, too, anywhere near the event.