Sunrise host David Koch looks dapper in checkered blazer and trousers as he steps out with wife Libby for Channel Seven luncheon By Aleksandra Pavlovska For Daily Mail Australia Published: 07:02 BST, 23 May 2019 | Updated: 07:02 BST, 23 May 2019 Viewcomments His colleague Samantha Armytage was announced as Weight Watchers' newest ambassador in a deal reportedly worth $250,000. And in celebration, Sunrise co-host David Koch stepped out with his wife Libby as the pair attended a luncheon for the brand on Thursday. Clad in stylish ensembles, the pair were joined by David's Channel Seven colleagues at the Sydney event. Sunrise host David Koch (R) looks dapper in checkered blazer and trousers as he stepped out with wife Libby (L) for a Channel Seven luncheon on Thursday David, 63, looked dapper in a quirky ensemble as he strutted in the street beside Libby. He opted for a white collared shirt teamed with a checkered blazer on top. David also wore brown trousers and completed the look with a pair of tan brogue shoes. Outing: Clad in stylish ensembles, the pair were joined by David's Channel Seven colleagues at the Sydney event. Pictured at another event in 2018 He accessorised with a pair of stylish sunglasses and carried a black messenger bag in one arm. Meanwhile, Libby stunned in a floral dress teamed with bronze-coloured wedge heels. She finished off the look by wearing hoop earrings and accessorising with a black clutch. Supporting his pal! Meanwhile, David's colleague Samantha Armytage was announced as Weight Watchers' newest ambassador in a deal reportedly worth $250,000. Pictured: David in 2005 Libby also wore her blonde locks in a neat up-do for the lavish occasion. Meanwhile, David's co-host Samantha was no doubt in a celebratory mood, having revealed her ambassador role with Weight Watchers just hours earlier. She showed off her slimmed-down figure in a form-fitting black dress for the outing. The blonde beauty's rumoured '$250,000 deal' has already seen her lose 10 kilograms. Wow! The blonde beauty's rumoured '$250,000 deal' has already seen her lose 10 kilograms Share or comment on this article: All rights reserved for this news site dailymail and under his responsibility