Kate Hudson and Nick Jonas aren't doing much to squash speculation that they're dating.

The 36-year-old actress and the 23-year-old singer were both spotted at the Industry Club in New York City for the launch party of Demi Lovato's new single "Confidence" on Thursday. However, the two did not show up to the gay club together.

WATCH: Selena Gomez Admits Her Gay Friends Encouraged Her to Date Nick Jonas

"So proud of my friend @ddlovato on the release of her new album CONFIDENT!" he tweeted on Friday. "This record is a masterpiece. Go check it out."

Hudson arrived later to the event with a few friends, and was hard not to notice in her sexy black, cut-out jumpsuit. To top it all off, she paired her scantily clad outfit with sky-high pumps.

The Almost Famous star and Jonas were never seen together on Thursday night, but an eyewitness does tell ET that the "Jealous" singer did sneak into the hotel where the actress was staying.

MORE: Kate Hudson Gets Candid About Why She Called Off Wedding With Matt Bellamy

While it appears Hudson is running in the same circles as the former Disney star, Jonas told ET Canada that he's very much on the market.

"I'm 23, single and loving life," he declared."And in a moment, I'm just trying to have as much fun as possible... I do live a public life and, for whatever reason, people are interested in that."

WATCH: Nick Jonas Teases 'Folk' Collaboration With Demi Lovato

That being said, both Hudson and Jonas are on the rebound. She called off her engagement to rocker Matthew Bellamy, while Jonas recently broke up with his longtime girlfriend, former beauty queen Olivia Culpo.