Kesha has hinted her new single could feature Rihanna.

The "We R Who We R" hitmaker posted a video teaser for her track "Die Young," which features a waffle house waitress holding a piece of paper with an "R" written on it, which looks much like Rihanna's logo. A caption then flashes on screen which reads, "What's it all mean??? (sic)"

Also in the video, Kesha sings the song's chorus to a group of confused commuters on the Tokyo metro. Another caption reads, "Getting closer. get hyped. eternal boners (sic)."

Kesha - famed for her songs about getting drunk and partying - has previously said she plans to show her "vulnerable" side on her second, as-yet-untitled, album.

"I have a lot of growing and evolving to do. I'm definitely not a one-trick pony and I think people are starting to see that more and more. I have learned over the past three years of doing this that being vulnerable doesn't mean you're weak. I very much want to be seen as a strong woman, but I realize that vulnerability can also be a strength. So on my next record, you are going to hear probably a little more of that."