Meghan's visit sparked controversy after her royal protection officers told spectators they were unable to take pictures of her as she watched Serena Williams as she was there in a "private capacity".
Meanwhile, Meghan wore a crisp white shirt teamed with a pleated £350 Hugo Boss midi skirt, which featured a striking blue and black pattern.
Last week, Swiss great Roger Federer revealed he had recently played tennis with Kate's son Prince George during a visit to her parents' home in Bucklebury, Berkshire.
"She couldn't be a better friend to me".
Last year, the two royals headed out to watch Angelique Kerber and Serena Williams.
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There was no sign of the reported royal rift as they continued to clap, chat and smile throughout the nail-biting fight for the title, which saw Simona beat Serena 6-2 6-2 to win the Wimbledon title.
The royals are expected to return to the tennis tournament together to watch the women's final. "That's just the kind of person she is".
"She said it's my honour to have the opportunity to meet with you girls", Morlet added.
The two duchesses arrived separately to SW19, with Kate first meeting some female junior players in her role as patron of the All England Lawn and Tennis Club.
But Meghan's Wimbledon appearance attracted a flurry of negative press, with those sitting nearby reportedly warned by security not to take photos of her.
Commander Feustel and his wife Indira will be seated in the Royal Box for the women's final.
Also in the crowd at the final were "Beauty and the Beast" co-stars Josh Gad and Luke Evans, "Doctor Who" star Jodie Whittaker, Pharrell, Aidan Turner, Lily James, and British Prime Minister Teresa May.