Mollie and David were just some of the guests in attendance at the glitzy party, which was held at London's Sky Gardens on Tuesday night (24 February).
Mollie, who is one fifth of girl group The Saturdays, looked stunning (as always) in an emerald green Ralph Lauren dress with a plunging neckline.
The 27-year-old completed her chic look with natural make-up and slicked back hair. Meanwhile, 35-year-old model David looked very smart in a navy three-piece suit and black tie.
The couple were all smiles as they posed for a photo, with David also placing an arm around Mollie's waist.
In fact, this is the second time the couple have made a public appearance this week.
On Monday (23 February), Mollie and David looked picture perfect as they cuddled up together at the Creative London party hosted by the British Fashion Council.
Mollie and David, who prefer to keep their romance low-profile, previously dated in 2011 but split after 10 months together.
However, the pair rekindled their romance once again, with David confirming they were back together in October 2014.
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