Tight Pants with Will Ferrell, Jennifer Lopez and Christina Aguilera, One town isn't big enough for Jimmy, Will Ferrell, Jennifer Lopez and Christina Aguilera to wear their tight pants. #FallonFlashback

The Tonight Show Starring Jimmy Fallon

Tight Pants with Jimmy Fallon, Will Ferrell & Christina Aguilera

The Tonight Show - The Tonight Show Starring Jimmy Fallon

Jimmy Fallon, Will Ferrell and XTina are bringing back tight pants

Tight Pants with Will Ferrell, Jennifer Lopez and Christina

The Tonight Show - The Tonight Show Starring Jimmy Fallon

The Tonight Show - The Tonight Show Starring Jimmy Fallon

The Tonight Show - The Tonight Show Starring Jimmy Fallon

Will Ferrell & Jimmy Fallon Squeeze Back Into Their Tight Pants

The Tonight Show: Tight Pants with Will Ferrell, Jennifer Lopez

Tight Pants with Jimmy Fallon & Jennifer Lopez

Tight Pants with Jimmy Fallon, Will Ferrell & Christina Aguilera

Tight Pants with Jimmy Fallon & Jennifer Lopez