Alanis Morrissette's breakthrough album 'Jagged Little Pill' recently celebrated its twentieth birthday, which means that she's been on the promotional trail to plug it.

There's no doubt that twenty years of singing 'Ironic' would take its toll on anybody, but Morrissette turned up on Jimmy Fallon's Tonight Show last night for a pretty bizarre rendition of her most famous song.

She was joined by Meghan Trainor and Fallon as they formed the 'Jagged Little Chicks' for one performance only (hopefully).

Watch it below: