Jennifer Lopez was on hand to show off her 'tight pants' alongside Jimmy Fallon on the Tonight Show.

The singer appeared on the iconic show on Monday (June 9) and she joined Fallon in a sing-a-long about tight trousers, which Will Ferrell had previously performed.

The 60s themed number saw Lopez say that she has the "tightest pants in all the land".

The skit meanwhile ended with the US star turning around and showing off her famous backside in all its glory.

It's not all been good news for Lopez fans recently, however, with the singer cancelling her scheduled appearance at the 2014 FIFA World Cup opening ceremony this week.

The singer was due to line-up alongside Pitbull and Claudia Leitte in São Paulo on Thursday (June 12) to run through their official World Cup song 'We Are One'.

However, it has been announced that Lopez cannot perform anymore due to "production issues".

Follow us: @Pressparty on Twitter / Pressparty on Facebook