MEPs held hands and sang Robert Burn's Auld Lang Syne after Britain's Brexit bill was approved by the European Parliament - meaning the UK's exit deal has passed its final legal hurdle.
Politicians held scarves that read "Always United" after MEPs backed the Withdrawal Agreement, which was approved by Parliament last week, by voting 621 for versus 49 against the Brexit deal, with 13 abstentions.
Euro MPs took part in an afternoon of emotional speeches - with almost every member speaking saying that Britain would be missed after their exit.
MEPs cried as the vote was passed.
As British MEPs arrived in the European Parliament, a sign above the chamber could be seen reading: "It's not goodbye, it's au revoir."
The message had been put up by the S&D, a coalition of socialist parties.
Britain's Brexiteers were jubliant at the Brexit passing its final hurdle.
But even Nigel Farage admitted that there was at least one thing he would miss about Brussels.
At a press conference in Brussels, Mr Farage said he would miss being the ''pantomime villain'' at the European Parliament.
He said Brexit was a ''victory for grassroots campaigning'' in the face of opposition from the ''entire UK establishment''. ''Whatever my criticisms may be of the political system in the UK and its need for urgent reform, in the end what this shows is that it still actuall
Foreign Secretary Dominic Raab signed the official document ratifying the deal for the UK side, which was then taken to Brussels by Britain's ambassador to the EU, Sir Tim Barrow.
Mr Raab said it was a "historic moment" and "the start of a new chapter for an independent, sovereign Britain, looking forward to a decade of renewal and opportunity".
The agreement settles the terms of Britain's departure, including future citizens' rights, the arrangements on the Northern Ireland border and the UK's divorce settlement.
It also allows for an 11-month transition period, during which the UK will continue to follow EU rules while talks take place on a free trade agreement.
