Millwall will wear their white away kit in their Sky Bet Championship match against Barnsley on Saturday at The Den to show their support for Prostate Cancer UK, The Football League's Official Charity Partner.
The Lions have received special dispensation from The League to wear their away kit for a home match in celebration of the Heroes in White day, which is associated with the charity, who are also the club's sponsor.
A £5 donation from the sale of the white playing strip during the month of November will go to the charity.
Fans attending the match are also being encouraged to wear white, with commemorative T-shirts on sale and profits going to Prostate Cancer UK.
Lions legends of the 1960s and 70s - Alan Dorney, George Jacks, Billy Neil and Barry Rowan - will be in attendance for the match against the Tykes.
Additionally, a special, bumper edition 100-page matchday programme containing features relating to the serious issues of the fight against male cancers will be available to purchase.
As well as wearing white, a number of Millwall players - Paul Robinson, Steve Morison, Richard Chaplow, Liam Trotter and Mark Beevers - will be sporting moustaches, which they are growing in support of Movember.
Tickets for the 3pm kick-off are on general sale and you can make an optional donation of £1 to Prostate Cancer UK when you purchase your ticket by phone or in person at the Millwall ticket office.
Brian Kilgannon is a lifelong Millwall fan, living with prostate cancer - click here to listen to his story.
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