Harry Styles is set to play one of the biggest shows of the year this evening at a sold-out Aviva Stadium.

He has already been spotted walking around Dublin with Olivia Wilde, hitting up some popular spots in the city centre.

Last night he decided to unwind at the Vico Baths in Dalkey for an evening dip, alongside Olivia and Eve Hewson.

Harry Styles enjoying the scenery at the Vico Baths in Dalkey, alongside Olivia Wilde and Eve Hewson.

However with the event of the century fast approaching, here's everything you need to know ahead of the star's arrival.

Getting To And From The Aviva Stadium.

The Dart is the best option for getting as close as possible to the venue, with the nearest stop being Lansdowne. The Dart runs from 9 am to 12 pm and you can expect one every 10 to 20 minutes- but beware, it will be busy.

For those getting left at Connolly Station, the Aviva is roughly a 40-minute walk, so if the weather is dry and you want to avoid a train carriage packed like a tin of sardines, the walk is not too bad.

If you are lucky enough to have a lift, the Aviva website has a range of car routes for concert days.

However, the Aviva website also states: "Kindly note, there is no bike parking or car parking available at Aviva Stadium on match day/ concerts for security reasons."

Safety First!

Ticketmaster states: "Standing tickets only available to persons aged 16 and over. No under-16s will be allowed on the pitch. U16s must purchase seated tickets. All under 16s entering the stadium to be accompanied by parent or guardian."

For any lost property, you can contact [email protected] as per the Aviva Stadium website.

The Aviva ground rules state "No bags (with the exception of small handbags) will be allowed into the stadium. Handbags will be subject to search."

The All-Important Gig

Arlo Parks will be supporting Harry Styles. Arlo is a British singer-songwriter and poet. She's known for songs such as 'Hurt', 'Cola', and 'Black Dog'.

Based on previous shows on the tour, it is estimated that Arlo will begin around 7.15 pm.

Harry then appeared on stage at 8.45 pm in Wembley and played for 90 minutes, so we imagine it should be around the same.

He has been playing a healthy mix of old and new songs, with some classic One Direction hits thrown in for good measure. He has been opening with the first track of his latest album, 'Music for a Sushi Restaurant'.

Also, keep an eye out for familiar faces!

Niall Horan attended the London show with his girlfriend Amelia Woolley, with reports saying they danced and sang along to some of Harry’s hits.

Those in the crowd at the London stadium were sent into a frenzy, though, when they noticed a familiar face amongst the swarm of fans.

Warm up your vocal chords for this evening below.