'A deal is a deal': Aer Lingus crew don All Blacks jerseys after losing rugby bet to Air New Zealand

The crew of Irish airline Aer Lingus has swallowed its pride and donned All Blacks tops after losing a bet to Air New Zealand.

The two airlines made a public pact before yesterday's Ireland v New Zealand rematch in Dublin - betting that the losing nation's national carrier would wear the winning side's rugby jersey.

It came after a back-and-forth between the two airlines' Twitter accounts ahead of the big game, which saw Ireland lose 9-21 on home turf at Dublin's Aviva Stadium.

READ MORE: Air NZ vs Ireland - national airlines throw banter back and forth

The airlines sparred over Twitter, throwing out some interesting proposals - from boarding passes and in-flight magazine covers, to airport revamps.

They finally settled on a cabin crew uniform change if their side lost.

Today Aer Lingus posted a short video of Air New Zealand crew handing over All Blacks tops for them to wear.

The four crew members in the video smile and hold them up - however forced the smiles appear.

But the airline said it all when it posted: "A deal is a deal."

Air New Zealand was a gracious winner though, telling the rival airline: "Great game @AerLingus and @IrishRugby. Thanks for being great sports. #AirlineChallenge"