Britain's Prince Harry partied with a bevy of beauties including Cara Delevingne, Margot Robbie, Poppy Jamie and Sienna Miller at Suki Waterhouse's birthday bash.
The 31-year-old royal helped the blonde actress celebrate her 24th birthday at a bash in Notting Hill, London last month and onlookers said the pair looked "particularly close".
A source told the Sun on Sunday: "It was Suki's party and they gave each other a big hug when they saw each other.
"Harry seemed completely interested in what she had to say. She was very bubbly and loud while he seemed to be enjoying her zaniness and free-spirited nature. Everyone was talking about how Suki and Harry seemed particularly close, some even said there was the start of a romance brewing.
"Suki fits the bill as to what he seems to like in a girl - bubbly, blonde and posh."
However, Harry has recently been linked to US PR assistant Juliette Labelle, 22.
The pair are said to have grown close after meeting when Harry was in Los Angeles over New Year with a source saying: "She's fun, confident and doesn't mind showing off how sexy she is. And she has that boho free spirit he likes."