Earlier this week, viewers saw Derek and Tyler decide to have a festive wager with Alfie and Fatboy, agreeing that whoever took the least on their stalls by Christmas Eve would have to hand over that day's takings.
When December 24 finally arrives, the competition heats up as the rival stalls are eager to bring in last-minute sales to help boost their totals.
Fatboy decides to recruit fun-loving Kim Fox (Tameka Empson) as his secret weapon, and she rises to the occasion by putting on a revealing festive outfit to impress the punters.
Tyler (Tony Discipline), meanwhile, also braves the cold by stripping down as part of his own strategy. Who will come out on top?
EastEnders airs these scenes on Christmas Eve at 9pm on BBC One.