TWITTER: Irish fans are absolutely buzzing ahead of today's Rugby World Cup quarter-final

Today is the day.

In case you forgot, Ireland are playing Argentina today in the Rugby World Cup quarter-final.

Kick-off at the Millennium Stadium is at 1pm.

Joe Schmidt’s side may have a host of top players missing, but that hasn’t dampened the atmosphere ahead of the huge match this afternoon.

Here is the best of what’s been happening so far today.

Ireland team bus arrives at the Millenium stadium #IREvARG #RWC2015 pic.twitter.com/JmfATsdGMH

— Lisa McAlister (@ReporterLisa) October 18, 2015

C'MON IRELAND ????? #IREvARG

— Sinead Farrelly (@sineady_eady) October 18, 2015

Cardiff town is packed with Irish #IREvARG

— Chloé (@Chloe_grahame) October 18, 2015

Come on Ireland, do it for Mary Robinson, Clinton Morrison, the pig from the den and most of all Shane Byrne's sexy Martians #IREvARG

— Tom Morley (@ToMorley) October 18, 2015

These gents are ready for kickoff! #IREvARG #rwc2015 #Cardiff #ire #arg pic.twitter.com/xUpyIGJbG6

— Jose (@jose_jarod) October 18, 2015

#COYBIG #IREvARG pic.twitter.com/9fbBIMJN9X

— PM1878 (@MoranPaul52) October 18, 2015

About to board a 4 hour flight,hoping the captain will keep us informed on #IREvARG result as it will be over when we land

— brian walsh (@bhriano) October 18, 2015

Cardiff has been taken over by Ireland today, which must be empty. #IREvARG #RWC2015 #fatherted pic.twitter.com/gpF3627Jyn

— David Nicholson (@davidnicholson2) October 18, 2015

Green army arriving early. C'mon Ireland. #ShoulderToShoulder #IREvARG #RWC2015 @markmcclean pic.twitter.com/jo1wEFkqUs

— Mark Murphy (@DrMarkMurphy) October 18, 2015

The day is here.. CMON IRELANDDDD???? #IREvARG

— Sarah Hughes (@SarahHughes18) October 18, 2015

Soooo excited for today's game #IREvARG ??

— Caroline(: (@CarolineeOx) October 18, 2015

The nerves I feel ahead of today's match are insane. Come on IRELAND!!!! #ShoulderToShoulder #IREvARG

— veronica (@Vee_1987) October 18, 2015

Argies team coach #IREvARG #party pic.twitter.com/K8BRY7q3bg

— Matt (@BigWelshBear) October 18, 2015

C'MON IRELAND?? #IREvARG #IRE

— Amber || Felicia (@irishamberxo) October 18, 2015

Priests reporting record attendance at mass across Ireland this morning. #COYBIG #IREvARG #ShoulderToShoulder pic.twitter.com/LiLvOFLyMI

— Ian Kearney (@IanKearney) October 18, 2015

I am so frickin nervous oh my god #IREvARG #RWC2015

— Becky Walsh (@ItsBeckyWalsh) October 18, 2015

Gooo IRELAND !!!!! Come on!! ?????? #IRE #IREvARG #ShoulderToShoulder @IrishRugby

— Celine Attendue (@CelynePatapon) October 18, 2015

wales is green today! #IREvARG pic.twitter.com/ebbaZwQi5G

— Nik Kamal (@maestronine) October 18, 2015

Ireland cha cha cha ????? #RugbyWorldCup #IREvARG #COYBIG

— Ruth Berkeley (@Ruthieblaze) October 18, 2015

Already feeling the nerves ahead of #IREvARG !!! #ShoulderToShoulder #RWC2015

— W-Pie (@WayneRyanJackso) October 18, 2015

Ready for kickoff! #IREvARG #rwc2015 #Cardiff #ire #arg

— Jose (@jose_jarod) October 18, 2015

Come on Ireland #IREvARG #RugbyWorldCup @leinsterrugby @IrishRugby

— Paul Kelly (@kellsp77) October 18, 2015

#ShoulderToShoulder #RWC2015 #IREvARG #ire come on you ireland !!

— marvin jang ™ (@BujangSenandung) October 18, 2015

We could be caught for height in the lineouts, but we'll be deadly in the scrums ! #irlvarg #IREvARG #WCR2015 #Rugby pic.twitter.com/n2eoy4skzN

— john creedon (@johncreedon) October 18, 2015

Looking forward to the rugby later. C'mon Ireland #RWC2015 #IREvARG ????????????????

— Phil (@PhilCTynan) October 18, 2015

Half the team demolished since last week. Let's hope we can pull this off #IREvARG #COYBIG

— Molly McEntee (@mollypopz_) October 18, 2015

I'll be on @ThisisiRadio from 12 LIVE from Cardiff #RWC2015 #IREvARG #ShoulderToShoulder ?? pic.twitter.com/MP504LWQI1

— Meghann Scully (@Meghann_Scully) October 18, 2015

Have been so excited for this match. Less than 2 hours to go & nerves wrecked. Ireland jersey & green converse on #COYBIG #IREvARG

— Emma Sloan (@emmasloan) October 18, 2015

Jesus I can't handle the build up anticipation much more #IREvARG

— Mark Dalton (@TheMarkDalton) October 18, 2015

Lucky hat on!,Now all I have to do is,wait and wait! Come on 1pm ?????? #IREvARG #IRE #IRE pic.twitter.com/wd122jA8nL

— @Aoifs2707 (@Aoifs2707) October 18, 2015

Shouldnt have had such a big breakfast! Far too jittery #IREvARG #RWC2015

— Laura Murphy (@Lolliemurphy06) October 18, 2015

Back in Cardiff ready for Ireland’s QF, it’ll be a tough game but I’m backing an Irish win #RWC2015 #IREvARG http://t.co/ExkFnZ5p2g

— Peter Stringer (@stringer9) October 18, 2015

Is there anything to be said for another Mass? Getting it in early. #ire #shouldertoshoulder #IREVARG pic.twitter.com/zffZAjmtiS

— Jackie Mc (@Jackiem23) October 18, 2015

#RWC2015 #IREvARG #Cardiff pic.twitter.com/J4mpAz3GDK

— James Shine (@Shine2Jim) October 18, 2015

Best of luck #Ireland for #IREvARG fingers crossed it goes our way #RugbyWorldCup

— Sinead Bunting (@SineadBunting) October 18, 2015

@SWPCapitalCity Cardiff NPT on patrol #rugbyworldcup #IREvARG ^bb pic.twitter.com/MuERqYjSR0

— SWPCapitalCity (@SWPCapitalCity) October 18, 2015

Good luck @IrishRugby v #ARG today. Lets make history #IRE #IREvARG #ShoulderToShoulder #CommittedToIreland #RWC2015 pic.twitter.com/JdjRTxPuYu

— Aron Hegarty (@AronHegarty) October 18, 2015

Both sets of fans are feeling it.