The British model sparked marriage rumours after she was seen sporting a diamond ring on her engagement finger yesterday.

Lily showed off the modest gold band as she enjoyed a walk around London's trendy Primrose Hill area with her boyfriend, American actor Enrique Murciano.

A source said: "Lily and Enrique looked so happy together. Lily couldn't stop smiling and kept touching the ring on her left hand."

The 21-year-old redhead has been dating the 35-year-old 'Without A Trace' actor since last year.

The couple have been inseparable since meeting and even attended Salma Hayek's recent wedding celebrations in Venice, Italy, together.

As well as enjoying a successful modelling career, Lily has branched into acting with a role in new Hollywood movie 'The Imaginarium Of Doctor Parnassus'. The multi-talented beauty is also currently studying History of Art at Britain's prestigious Cambridge University.

A fellow student said: "Lily was nervous about her end of year exams, just like the rest of us.

"I don't know how she has managed to fit any revision into her busy social life and career."

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Photo: WireImage.com

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