Neil Patrick Harris
, David Burtka
, Emma Roberts
, Brad Goreski
's Ashley Madekwe
, Pretty Little Liar
's Shay Mitchell, Glee
's Darren Criss and Mark Salling all attended A|X Armani Exchange's takeover of HYDE Lounge at the Staples Center for Madonna's "MDNA" concert in Los Angeles on Wednesday night.
"Neil Patrick Harris and David Burtka were on their feet for 'Like a Prayer'," an onlooker tells PEOPLE."They were adorable and loved it."
Guests danced to some of the singer's greatest hits like "Holiday" and "Turn Up the Radio."
"Emma and Shay put on Madonna-inspired lace gloves and pearls while they tried voguing," the source adds.
– Jennifer Garcia