Shaun White and Nina Dobrev Make First Red Carpet Appearance as an Engaged Couple at Earthshot Prize Awards

Shaun White and Nina Dobrev have that engaged glow!

White, 38, and Dobrev, 35 stepped out for their first red carpet date night as an engaged couple on Wednesday, Nov. 6, at the fourth annual Earthshot Prize Awards at Green Point Shared Fields in Cape Town, South Africa. The ceremony, which is led by Earthshot's founder and president Prince William, celebrates five winners' contributions toward environmentalism.

The glitzy green carpet event was attended by the Prince of Wales and many celebrities, including Dobrev and White, who announced their engagement on Wednesday, Oct. 30.

Dobrev stunned in a strapless red gown by Carly Cushnie. She styled her hair down and straight, and accessorized with sparkling earrings and her new 5-carat diamond engagement ring. Standing beside her was White, who opted for a classic black tuxedo.

"I really wanted to support a black designer and she makes impeccable dresses for women," Dobrev told reporters on the carpet.

The Olympic snowboarder announced a week ago that he popped the question under a white floral arch surrounded by candles. On the carpet, Dobrev tells PEOPLE that the first days of her new engagement have been "magical."

She even appeared to give her fiancé a sweet smooch on the carpet.

"I was incredibly excited to get the invitation to give out a prize at the awards," the Vampire Diaries alum tells PEOPLE. "It’s a great cause. It’s incredible we get to highlight all these incredible groundbreaking innovators in all the things they’re doing."

She continues of the Earthshot Prize Awards finalists: "They’re so unique and they’re so different and they’re all touching the world in helping in their own unique way. But we need all of them. We’re going to give out five awards but all of the finalists are going to get mentorship and support from the organization."

"We need this now more than ever," Dobrev adds. "The world is in dire need."

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Earlier this week, a source spoke to PEOPLE about how Dobrev and White are "glowing" as an engaged pair.  

"Everyone is so happy for them," the source told PEOPLE. "After the proposal, they were calling and texting friends saying, 'It can't get better than this' and were just glowing."

The insider believes Dobrev and White’s upcoming wedding will be a "a blowout party."

"They are the perfect fit together — fun and adventurous, but also very grounding for each other," the source added.