The first rule of thumb at any wedding is not to upstage the bride - but it looks as though Maisie Williams didn't get that memo.

Both she and boyfriend Reuben Selby, both 22, arrived at Sophie Turner's pre-wedding party in France with matching pink hair on Friday.

Maisie's BFF Sophie is thought to be marrying Joe Jonas in France over the weekend for the second time, following their Vegas nuptials on May 2.

They've arrived! Maisie Williams and boyfriend Reuben Selby dyed their hair pink for Sophie Turner and Joe Jonas's pre-wedding party in France on Friday

Hue's looking at you, kid: Maisie is acting as Sophie's maid of honour on the big day

The actress will be Sophie's maid of honour at her wedding and the pair have been the best of friends since starring on Game Of Thrones together.

Maisie and Reuben have clearly changed up their hair especially for the big day as they were pictured on their holiday in the Seychelles with blonde hair days before.

Sophie and Joe are staying at the Hotel Crillon le Brave in the South Of France and are thought to be tying the knot at the £5357 a night Chateau de Tourreau.

Mix and match: The couple were both blonde when they enjoyed a lavish getaway to Silhouette Island, in the Seychelles, staying in a £3,500-a-night villa

Looking good: Sophie and Joe were smartly dressed for their pre-wedding party held at the Hotel Crillon le Brave ahead of their nuptials

Maisie and Sophie recently spoke about their friendship in an interview with Glamour last September.

Sophie said: 'People always think Maisie and I are a couple. I mean, I am obsessed with her, so you never know.

'She’s my drug. I’ve got an addiction to Maisie Williams. I actually stalk her hashtag on Instagram.'

Sticking to the dress code: Both Maisie and Sophie were dressed in white for their outing

They love to dress up: From pink hair to glitzy eye masks, it's clear that Maisie and Reuben love to experiment with fashion

The lovely ladies met aged 12 and 13 respectively during the audition process for Game Of Thrones back in 2009.

They exchanged emails and have been best friends ever since.

Sophie agreed: 'We’ve helped each other through a lot of mental-health problems, especially around body image. She’s been my crutch in that, and I’ve been hers because it seems everything she goes through, I go through.

'You know when girls are together a long time, their periods sync up? It’s like our emotions and personalities sync up, too.'

Stunning: Sophie and Joe re thought to be marrying at the £5,357 a night Chateau de Tourreau in Sarriens on Saturday - the period property was built in 1612 and is in the heart of Provence - it has an infinity pool and 20-acres of land