REPORT: Sienna Miller is "Obsessed" with Model Cara Delevingne

Cara Delevingne and Sienna Miller were holding hands at Lou Lou's club on April 29 in London, England.

Cara Delevingne and Sienna Miller were holding hands at Lou Lou's club on April 29 in London, England.

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Sienna Miller is reportedly "obsessed" with Cara Delevingne.

The 32-year-old actress, who has 11-month-old daughter Marlowe with her fiancé Tom Sturridge, has become inseparable with the 21-year-old model recently and has been pushing away her friends - including Suki Waterhouse - in order to spend time with Cara.

"Sienna is relentless about wanting to spend time with Cara. She seems a bit obsessed," a source revealed.

Sienna Miller Kisses Cara

Sienna and Cara locked lips at the 2013 Met Ball in NYC. (Photo: Instagram)

However, it seems Cara's close friendship with Sienna - who she was caught kissing at last year's Met Ball in New York City - may have contributed to the blonde beauty's split with Michelle Rodriguez, 35, in April.

"When Cara was dating US actress Michelle Rodriguez, Sienna was always getting involved and it caused an issue," the source explained to Daily Mail. "She was always kissing Cara, which Michelle wasn't keen on."

Is Cara Delevingne Moving In With Michelle Rodriguez?

Michelle, who began dating the bisexual star earlier in the year, reportedly ended their romance as she was fed up of Cara's constant partying with young female celebrities.

"It looks like Michelle and Cara are now over for good. Michelle got tired of Cara constantly being pictured with other female celebs," a source said at the time.

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