The pop star looked gorgeous in her LBD as she stepped out at the official Capital FM Summertime Ball after-party at Mahiki on Sunday night (9 June).
Earlier in the day, she'd joined band mates Frankie Sandford, Una Healy and Vanessa White on stage at Wembley Stadium for a blistering set that included new single 'Gentleman' and classics including 'Forever Is Over'.
After swapping her stage clothes for a slinky black dress, Mollie joined forces with pal Aaron Renfree (formerly of S Club Juniors and now a dancer/choreographer), for a night on the town, taking in the exclusive Arts Club in Mayfair before finishing the night at Mahiki, where several pop stars, including The Wanted and Ed Sheeran, were also partying.
There was only one pop star on Mollie's mind on Sunday, however, and that was Justin Timberlake!
Mollie excitedly told her Twitter followers she couldn't believe how close she was to JT, who was in London as the special guest host of the Summertime Ball.
"I can't believe @jtimberlake is in the same building as me right now!! Granted it's a huge one, but it still counts, right?" she wrote.
Yep, we think it still counts, Mollie.
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