The singer has recorded new track 'Hero' for the upcoming Kick-Ass 2 soundtrack.
"I wrote the soundtrack song for #kickass2 #themovie here is a little taste! #superheropose," Jessie J tweeted.
Kick-Ass 2 - which stars Aaron Taylor-Johnson and Jim Carrey - will be in UK cinemas from August 14 and from August 16 in the US.
Meanwhile, Jessie J recently performed new track 'Square One' during her live set at the Eden Project in Cornwall.
The star recently told Digital Spy that her new album is more eclectic than her 2011 debut Who You Are.
"The next single is straight-up pop and everything on the album is completely different," she said.
"'Wild' was the one that grabbed people's attention, but the album is really eclectic actually - probably more so than the first one."
Watch the music video for Jessie J's current single 'Wild' below: