Rochelle Wiseman and Marvin Humes certainly looked every bit the power couple, when they turned up for a meeting at Number 10 Downing Street earlier this week.

The Saturday’s singer and her JLS fiancé were invited to the prestigious event as public supporters and patrons of children’s charity Rays of Sunshine.

The pair are set to be married next month, but took a break from all their wedding preparations for the charity lunch and we have to say, Rochelle has never looked more beautiful.

She stunned the waiting photographers in her pale pink shift dress, black jacket, some seriously high stilettos and a matching black clutch bag. Marvin may have lived it up in Las Vegas and Miami for his week long stag party earlier this month, but he looked every inch the respectable groom to be, in his tailored grey three piece suit and thin black tie.

Rochelle was elated to be attending the prestigious event and before arriving at one of London’s most famous residences, tweeted her followers saying:

‘On my way to 10 Downing St with Marv, in support of @RaysofSunshine very excited! Thanks to @dolcegabbana for our outfits ’

She also posted the above picture on Twitter, with the caption:

‘Knock knock!! Who’s there?!’

Marvin also enjoyed the event and meeting Prime Minister David Cameron’s wife Sam and he added:

‘Great evening tonight at number 10.. @RaysofSunshine with Mrs Samantha Cameron.. Marv x.’

Other stars joining Marvin and Rochelle included some of the One Direction boys, but as you can see form the picture posted by Niall Horan, he didn’t go to quite the same effort in terms of his outfit.

The handsome Irish star wore a grey hoody, his colourful bracelets and a pair of casual trousers, however he did make the day of a sick young girl and tweeted out this shot, with the caption:

‘Met this amazing girl this morning,niamh! Great morning @RaysofSunshine ,brave girl.’

Rays Of Sunshine responded:

‘Thanks to @onedirection for a fantastic @raysofsunshine wish morning today! Lots of wishes granted! Thanks for tweeting @NiallOfficial ! xxx’

The charity aims to help and improve the lives of children who are living with serious or life-limiting illnesses between the ages of 3-18. A pretty worthwhile cause, we’d say!