Katy Perry and Tom Hardy
Gregg DeGuire/WireImage; REX USA
08/31/2012 at 06:00 AM EDT
was a social butterfly on a recent night out at Soho House in West Hollywood.
Wearing a white lace dress, the pop star ran into a table of business associates having dinner in the garden and stopped to catch up before heading inside to the bustling bar to meet up with friends.
The recently single
singer "was all smiles and in great spirits," an onlooker tells PEOPLE. "She had hellos for everyone at the table. She was adorable and spoke to them in a character-like cutesy voice before making her exit about five minutes later."
Things were calm for Tom Hardy
, who was also at the Soho House the same Wednesday evening.
The Dark Knight Rises
actor was spotted "having a nice time with a small group of friends around the bar area," an onlooker says. "He was chatting away and listening to stories while he sipped on a cocktail."
"He looked like he was enjoying a very low-key night out," the source adds.