Sheen and Nesbitt cheer on their teamspublished at 16:39 British Summer Time 25 June 2016
Welsh actor Michael Sheen and Northern Ireland's James Nesbitt give their messages of support before their two teams meet in Paris.
Wales play Northern Ireland for a place in the quarter finals of Euro 2016, with the match kicking off at 17:00 BST
Tens of thousands of Wales fans have travelled to Paris for the game at the Parc des Princes
A fan zone is open at Cooper's Field in Cardiff from 15:00-20:00 BST
The game will be shown on BBC One and S4C. You can also listen on BBC Radio Wales and BBC Radio Cymru.
Get involved by sending your pictures and videos to newsonlinepictures@bbc.co.uk or @BBCWalesNews on Twitter and Facebook
Gemma Ryall and Ceri Coleman-Phillips
Welsh actor Michael Sheen and Northern Ireland's James Nesbitt give their messages of support before their two teams meet in Paris.
BBC Wales' Max Evans tweets
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Wales fans take their seats in Parc des Princes.
These Wales fans from Newport made the trip to Paris and it's fair to say they are a bit excited.
BBC Wales' sports reporter predicts Northern Ireland's tactics
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A Wales supporter appeals for tickets to the game.
BBC Wales' Max Evans tweets
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BBC Wales' Max Evans tweets
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This bunch from Cwmbran made the Wales bench - well, a bench outside the Paris fan zone.
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BBC Wales' Max Evans tweets
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Just watch this from BBC Wales' Tomos Dafydd
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BBC Wales reporter Max Evans is in Paris and says "security is pretty tight in places around the Paris fanzone," with three check points on the way in.
For the first time ever two of the home nations will play each other in the knockout stages of a major tournament.
Wales and Northern Ireland fans are are all hoping their side makes it through to their first European Championship quarter-final.
So what can we expect?
Wales fan Daniel Thomas and Northern Ireland supporter Gary McKee run through some of the key areas of the big match here.
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