After the thrilling 22-20 win against France in Paris that secured the Six Nations crown for Ireland, Brian O'Driscoll said he did not want to take his shirt off after the game because he knew when he did it would "be the last time".
O'Driscoll, whose international career has now ended, said: "I played on for one more year, hopeful to get a victory against the All Blacks - it didn't happen - and to win a Six Nations - and that did happen. You can't have it all, but you take the bits that you get."
He added: "Its been a fantastic Six Nations for us. I've enjoyed every second. It's an hour after the game and I don't want to take this jersey off yet, because I know when I take it off, that will be the last time.
"It will be weird if I start putting it on at home and start walking around in it. So I am kind of dragging it out a little bit."
The Irish rugby team celebrated their Six Nations win in true celeb style with a victory selfie with the trophy, taken by prop Cian Healy.
But England's players could only watch on from Rome, where they had earlier handsomely beaten Italy to take the championship down to the wire.
A thrilling 22-20 win for the Irish over France in Paris meant they claimed the title on points difference.
Ireland have pipped England to the Six Nations title after a nailbiting 22-20 victory over France in Paris.
After England's crushing victory over Italy at lunchtime, a French win in Paris would have seen Stuart Lancaster's men take the title.
But a pulsating game saw Ireland run in three tries to give a fitting send-off to iconic centre Brian O'Driscoll in his last ever international game.
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Wales First Minister Carwyn Jones said the squad had "done the whole country proud yet again" after their 30-3 triumph over England.
Mr Jones said he would like to "heartily congratulate" the whole team and the coaching staff on winning the Six Nations Championship.
"The team deserves a huge pat on the back on their performance - they did what they had to do to defend their title and keep the Six Nations trophy here in Wales", the first minister said.
"I'm sure I speak for Welsh people everywhere when I say - well done boys, you've done the whole country proud yet again", he added.
The Prime Minister, leader of Plaid Cymru and Welsh Liberal Democrat leader have praised the Welsh rugby team after they retained the RBS Six Nations title with a win against England.