Who better than Derek Hough to show her how to shimmy? After the star-studded crowd got down to The Isley Brothers' 1959 classic "Shout" at HBO's Emmys afterparty Monday night, the Modern Family star, 42, and the Dancing With the Stars pro, 29, got their groove on to Ray Charles' 1961 hit single "Hit the Road Jack." As an eyewitness tells E! News, "Everyone formed a giant circle around them to watch!"
The event took place inside The Plaza at the Pacific Design Center. At one point in the night, Hough jumped on stage and performed with the Golden Oldies' band.
At the same party, Girls' Allison Williams was overheard telling Downton Abbey's Michelle Dockery how "gorgeous" her Rosie Assoulin dress was. Williams' co-star Lena Dunham wore a polarizing Giambattista Valli ensemble that featured a tulle skirt. When the actress walked by fellow HBO star Justin Theroux, a partygoer says the Leftovers actor "needed to back out of the way because the train was so massive."
Gossip Girl's Kelly Rutherford made sure to introduce herself to Fox News' Bill O'Reilly, while three-time Outstanding Supporting Actor in a Drama Series winner Aaron Paul danced with wife Lauren Parsekian.