And, like Middleton, Davy seems good for her man. The British press has credited her with taming the "party prince," who confessed to smoking marijuana in 2002 and further embarrassed the palace by wearing a Nazi uniform to a party in 2005.
Recent photos of Davy show her following Middleton's lead. On Tuesday, she was photographed shopping in London sporting a look that mimicked the future princess' laid-back, self-assured style: jeans, flats, blazer -- nary a miniskirt nor a cigarette in sight.
Skyes thinks that if Davy stays the course, she could one day find herself walking down the aisle of Westminster Abbey.
"The key for Chelsy, if she and Harry are serious, is to master a more demure, quiet style," he said. "If she can sit in the corner a bit, the British public might go for it."
"Besides," he added, "Prince Harry is pretty wild himself. He's not going to be dating a nun."