But despite their exhausting schedules Frankie Sandford and Mollie King haven’t let their style slip.
The pretty singers showed off their sex appeal as they landed in London wearing coordinated skintight leather-look trousers.
Legs in leather: Mollie King arrived back in London showing off her legs in leather-look trousers
She teamed her tight trousers with a pair of knee-high boots and a white jacket with leather sleeves and accessorising her look she wrapped a large black and white scarf around her neck and carried a chic red leather bag.
Looking every inch a superstar she covered her eyes with a large pair of sunglasses, while she didn’t have a hair out of place.
Similar look: Frankie also wore leather-look trousers as she arrived in back in London on Friday
Her ensemble was completed with a pair of black heels, leather bag and Ray Ban sunglasses.
Vanessa White didn’t seem quite so pleased about being snapped, perhaps because she didn’t get the memo about wearing leather trousers.
Still going strong: Despite being very busy recently Frankie and Mollie have kept up with their fashion and always manage to look immaculate
Her curly hair was pulled off her face in a messy bun and she too covered her eyes with a pair of sunglasses.
Una Healy meanwhile looked like quite the rock chick in a leather jacket, while carrying a guitar.
She's a rock chick: Una looked cool in a leather jacket and shades as she carried a guitar
The band, minus Rochelle Humes who is on maternity leave, arrived in Dublin on Thursday afternoon - ready for their performance at The Bord Gáis Energy Theatre.
The girls, who achieved their first number one in the UK last Sunday, are hoping their single What About Us will stay on the top spot.
Although Ant and Dec's Lets Get Ready To Rhumble 1994 hit is threatening to steal their thunder.
Laid back: Vanessa looked more casual but her usual cool self as she arrived with her hair tied back off her face
'We've had an arena tour but I think for us a number one has sort of sealed the deal. We feel so proud.'
Una added: 'It means so much to us. You know we've been together, we've got the longevity.
'We'd never had a number one, that didn't mean to say that was going to be the end of us. We've had a lot of hits but to have a number one for us means the world. At least we're not one hit wonders. We've had a few hits before.'