Jade Thirlwall, Perrie Edwards, Leigh-Anne Pinnock and Jesy Nelson looked glam in trouser suits for a special live performance at a party thrown by The Sun newspaper.
The girls bundled together for a quick backstage photo, where they showed off their slick red pouts.
Their performance comes after Perrie took to Twitter to tell fans that their new album will be "worth the wait".
She said: "We have put our heart and souls into this album so we hope you love it as much as we do.
Here's a little message! Sweet dreams mixers! Love you lots! Perrie <3 pic.twitter.com/ujDfJA5iEa— Little Mix (@LittleMix) March 1, 2015
"We want nothing more than our fans to be happy with what we've worked on so far. We're currently recording the album now, adding those finishing Little Mix touches that make it an amazing album, and we can't wait to present it to you all."
Last week, Little Mix stunned at the Brit Awards in London where they said their third studio album will be a new direction for the group.
"It's scary because we've never done this style before," they said. "But we're excited because it's a new lane, a new year and we're feeling very positive."
Little Mix's last release was their 2013 album Salute.
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Watch Little Mix's video for 'Move' below: