Leaving Essex behind, the sisters ventured north to launch their successful Minnie's Boutique in Manchester as part of their pop-up shop tour.
Sam showed off her curves and cleavage in a black and white skintight printed checkerboard mini dress with cutout detail around the bust.
The star, who flaunted her new long hair extensions, teamed her outfit with black suede heels.
Meanwhile, Billie also looked sophisticated in a high-neck striped monochrome dress and red platform heels, keeping her hair loosely tousled.
Showing off their glowing tans, Sam and Billie were also pictured in more casual attire, both wearing jeans and a T-shirt, when they cut the ribbon.
Their boutique will be open all week at the Manchester Corn Exchange, and Sam and Billie will also be in store on selected dates, so if you're in the area make sure to pop in!
Essex-based Minnie's Boutique is certainly going from strength to strength since launching in Spring 2011.
Sam, who recently came back from a short break in Mallorca, tweeted: "This is officially our 7th pop up shop, have been touring the country for a year now, we can't thank everyone enough for all your support."
Sam and Billie then toasted the success of their launch with a night out on the town in Manchester.
Showing off their effortless style, Billie kept with the monochrome trend again in a cute black and white playsuit. While Sam added a splash of colour in a pretty blue playsuit with a bow headband.
Posting a photo to Twitter, Billie said: "Me and my sister @SamanthaFaiers ... #SisterlyLove #bestfriends #munchkins."
Have you visited one of Sam and Billie's pop-up shops? Tell us below, as the best comment from across the website each week wins £50!