Image source, EBU

These ladies have a lot of outfits, but here they are looking colourful as four women host Eurovision for the first time. Onwards and upwards!

What would Eurovision have been without Sir Terry Wogan's wonderful commentary? We are raising a glass (of water) to him tonight!

Lucy Todd
Entertainment reporter in Lisbon

There's an amazing spectacle in the arena as all the flags for participating countries are marched onto stage, carried by men and women in mismatched sailor outfits.

The whole of this year's Eurovision has a sea theme, so it's in keeping with that.

Big cheers all round for SuRie! Here's hoping the love for her carries through the rest of the contest,,.

Image source, Thomas Hanses

Portugal is taking us back in time with some traditional music. Ana Moura has sung a heartfelt song, in Portuguese, of course.

She is followed by another singer, Mariza,who doesn't look unlike our own entrant SuRie.

They're both singing fado, a music genre that can be traced to the 1820s in Lisbon.

The 2017 Eurovision Song Contest (has it really been a year?) was won by Salvador Sobral with his song Amar Pelos Dois.

As the reigning champion, he'll be returning to the Eurovision stage tonight before a new winner is crowned.

Graham Norton is welcoming us to the 63rd Eurovision Song Contest live from Lisbon on BBC One. Buckle up!

So there are 26 acts competing for the glittering prize tonight, but if you don't know who they are then fear not - you still have time to watch this before the fun starts.

And if you want a reminder on how the voting system works, look no further, external.

We don't know about you, but we seem to have noticed something a bit familiar about some of this year's contestants...

Image source, Getty Images

Denmark's entry, Higher Ground, sounds like it could have come straight out of Game of Thrones - The Musical (can someone please make this a reality?). And as luck would have it, singer Rasmussen bears more than a slight resemblance to Kristofer Hivju - aka Tormund Giantsbane.

Image source, Getty Images

It's been noted the UK's very own SuRie and Annie Lennox share more than just the same haircut. Not that SuRie minds - she told our reporter Lucy Todd that was fine by her as the Eurythmics star is one of her heroes.

Image source, Getty Images

They both enjoy colourful stripey outfits, bold eye make-up and wearing their hair in buns - yes, it's Israel's Netta and Bjork.

But have you spotted any other Eurovision doppelgangers? Or perhaps you look like one of the contestants? Drop us a line on entertainment.news@bbc.co.uk or tweet us @BBCNewsEnts and we'll feature the best ones.

Image source, reu

• The first Eurovision Song Contest was held in 1956. Only seven countries were included - and they performed two songs each (can you imagine how long tonight's show would be if everyone performed twice?).
• It's now the longest-running annual TV music competition in the world - and even has the certificate to prove it from the Guinness World Records.
• Since then, a whopping 1,500 songs have now taken part in the contest. If you wanted to listen to all of the songs, without a break for a cup of tea or to go to the loo, you'd have to stay up for 72 hours.
• The biggest ever live audience for the contest was in 2001, when almost 38,000 people saw it at Copenhagen's Parken Stadium.
• Ireland - competing tonight after a five-year hiatus - is the most successful country in the history of Eurovision with seven wins. Sweden has won six times while France, Luxembourg and the UK have been victorious five times.
• Poor old Norway has come last a total of 11 times. But it's not all bad for the Norwegians - they've won three times as well.

It may be SuRie's third time at Eurovision, but it's the first time she's represented the UK. Why does she love it soooooo much?

Since, you asked, here it is.

And how is the order determined? Rather than drawing lots, the order is actually chosen by the producers "to ensure each act has the opportunity to stand out".

Eurovision say they "look at the genre of music, whether a song is performed by a solo singer or group, the use of props, music tempo and various other aspects of each act". So now you know!

Hey we think of everything - this is a trove of information about each of the participants, external, happy reading!

Ahead of the final, BBC semi-final presenter Rylan Clark-Neal told us the five acts to watch out for. Here he is!

We know that many of you will be holding wild and crazy Eurovision parties right now. If you are, send us a picture of your fabulous costumes, dance moves and any other madcap antics we need to know about.

We don't want to be the only ones in sequins...

Email entertainment.news@bbc.co.uk or tweet @BBCNewsEnts, external

Let's hope your food is as, er, colourful as this!

UK entrant SuRie is gearing up for her big moment in front of squillions of people around the world. But for her, it's all about those devoted Eurovision fans!

So, just in case you didn't already know, you can watch tonight's Eurovision Song Contest from 20:00 BST on BBC One.

Graham Norton will be keeping British viewers entertained with commentary on all the acts, live from this year's ceremony in Lisbon, Portugal.

Ken Bruce will be in charge on the airwaves, with coverage starting on BBC Radio 2 at the same time.

Far more importantly, you can follow all the action right here on our Eurovision 2018 live page. And of course, you can follow updates from our Twitter account, external.

It's nearly time - welcome to Eurovision 2018!

You've got the best seats in the house here, thank you for joining us for live coverage.

We'll be with you all night bringing you commentary, updates and reaction from the greatest show on earth!

Follow us on Facebook , externaland on Twitter , external@BBCNewsEnts and let us know your thoughts on the wild, the wonderful and the downright weird. We might even use your comments - so keep an eye out!