The girl group will release 'Gentleman' as their next single and planned to debut the track on radio tomorrow at 7.45am (May 9).
However, the track has been leaked online in full a day ahead of the premiere.
The song hears the five-piece complain about how finding a gentleman to date is difficult in modern society.
'Gentleman' also features a list of namechecks, including Kanye West, Barack Obama, The Jonas Brothers, Drake, Ryan Gosling, Denzel Washington and Channing Tatum among others.
The song serves as the follow-up to The Saturdays' first UK number one single 'What About Us', which hit the summit back in March.
The accompanying music video will feature the group dressing up as men and is expected to premiere in the near future.