The Keeping Up With The Kardashians star, 34, wore a stunning fuschia mini dress to the posh event on Friday night (Sept 27).
The dress, with striking cape sleeves, made sure Kourtney stood out from the crowd at the cocktail reception to celebrate the launch of a new watch from luxury Swiss designer, Audemars Piguet.
She teamed the gorgeous dress with lace-up strappy sandals, black woven clutch handbag and a statement gold choker necklace.
Kourtney and Scott, 30, were at LeBron James' reception in Miami Beach, Florida, to catch a glimpse of the new £32,000 watch - named after the pro basketball superstar.
Scott kept it simple but elegant in a dark grey suit without tie, but didn't quite manage to crack a smile for the event's photographers.
The pair showed little signs of their recent turmoil, when male model Michael Girgenti claimed he was the father of Kourtney's three-year-old son Mason, NOT Scott.
But last month, a DNA test ruled that Scott is the father.
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