Jennifer Lopez Performs 'Tight Pants' Song With Jimmy Fallon (Video)

Out promoting her new album "A.K.A.," Jennifer Lopez stopped by "The Tonight Show" and got into a heated sing-off with Jimmy Fallon. The issue? Some very tight white pants.

Jennifer Lopez, Jimmy Fallon Dance in Tight Pants on Tonight Show

Stunning Jennifer Lopez Takes Over 'Tonight' Show with Her Iconic White Pants

Video] Jennifer Lopez Squeezes Into 'Tight Pants' With Jimmy Fallon

[Video] Jennifer Lopez Squeezes Into 'Tight Pants' With Jimmy Fallon

Tight Pants with Matthew McConaughey

Jimmy Fallon and Ellen DeGeneres Bring Their 'A' Game While Facing Off in a Lip Sync Battle on 'The Tonight Show

The Tonight Show Starring Jimmy Fallon - Some summer style

Jennifer Lopez shows toned midriff with Jimmy Fallon on The

Off on Tonight Show in Leggy Dress – Fonjep News - Jennifer Lopez

Jennifer Lopez Flaunts Abs On 'Tonight Show With Jimmy Fallon

Will Ferrell & Jimmy Fallon Squeeze Back Into Their Tight Pants