The Tigers, England and British & Irish Lions centre is the latest Tiger to put his name to the squad, which includes players and fans.
Tuilagi joins teammates including Ed Slater, Sam Harrison and George Catchpole as well as Terrence Hepetema, Jamie Gibson and team captain Jordan Crane.
A total of 95 players and supporters are now signed up and have so far raised more than £1,500 to the Movember cause. Richard Carter, Chris James and Keith Sherwood are among the fans to have raised the most so far, but there is still plenty of time to support the team’s efforts.
Movember is responsible for the sprouting of moustaches on thousands of men's faces in the UK and around the world during November. The aim is to raise funds and awareness for men's health, specifically prostate cancer and other cancers that affect men.
Visit uk.movember.com/team/1147277 to join the Tigers Movember team, show your support or donate.