Justin Bieber's random appearance in Friends special dressed as a potato

After weeks of teasing, fans have finally learned why Justin Bieber was involved in the Friends reunion, and it's left many baffled.

Warning! Spoilers ahead for Friends: The Reunion.

Nearly two decades on from the finale and after months delays, rumours and teasers, the long-awaited Friends reunion has finally aired.

The cast of the hit '90s sitcom ventured back to the iconic set for the one-off special, taking an unscripted walk down memory lane to the delight of die hard fans.

Aptly titled The One Where They Get Back Together, the special - which is now streaming on Binge - has been met with some controversy, from the unusual choice to have James Corden host, to concerns for Matthew Perry's wellbeing.

For all the tear-jerking moments, surprise guests and never-before-heard behind the scenes titbits, check out our live recap of the episode below.

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