Serena Williams delighted as Duchess of Sussex wears jacket from star's collection during Australia tour

The Duchess of Sussex gave a touching nod to her close friend Serena Williams by stepping out in a jacket from the tennis star's clothing line on day two of her visit to Australia.

Sporting a more casual look for a trip to the New South Wales city of Dubbo, the Duchess paired the grey plaid blazer with black Outlander jeans, a white shirt from Maison Kitsune and black boots by J Crew.

Williams, who has been friends with Meghan for several years, launched her fashion line, called "Serena", earlier this year, and describes the brand as "strong, sexy, sophisticated clothing".

The "Boss" jacket donned by Meghan on Wednesday sets buyers back $145 (￡110) and features a notched collar and patch pockets.

A description on the brand's website says: "Sometimes you just gotta show 'em who's boss. Our oversized blazer... works overtime in that department."

After pictures emerged of the duchess wearing the blazer, Williams shared her delight on social media.

Williams has previously hailed her "wonderful" friendship with Meghan and attended her wedding with Prince Harry in May.

The duchess was also on hand to watch Williams play in the Wimbledon final in July.

Williams said at the time: "We've always had a wonderful friendship.

"Every year, for a couple years, she comes out to Wimbledon, has supported me.

"Now she's supporting me in a different role. But our friendship is still exactly the same.

"We always have supported each other, just been there for each other through a lot."

On Tuesday, Meghan chose an ivory Karen Gee shift dress and nude heels for her first public appearance since it was announced she and Harry were expecting a baby.