By Rita Kokshanian
Updated Oct 23, 2014 @ 4:25 pm
Chris Jackson/Getty Images

The Duchess of Cambridge looked radiant in a black Temperley London frock at the Action on Addiction Autumn Gala Evening at L'Amina in London on Thursday night. Middleton's dress featured a low back and geometric cutouts over a nude underlay. She accessorized with black pumps, a beaded black clutch, and simple drop earrings.

This is Duchess Kate's third appearance since announcing that she and Prince William are expecting their second child. On Tuesday, she wore a gray Alexander McQueen coatdress (one of her go-to silhouettes) with a gray Jane Taylor Hat and black accessories. The same evening, she stepped out in an icy blue Jenny Packham gown. Although Middleton's maternity style was spot-on the first time around, judging by these three outfits alone we're wagering that this time will be even better.

Want to replicate Middleton's winning look? Her Temperley London dress is still available for $795 on