Insanely addictive.
Rhys Ifans, Sienna's new BFF was spotted in London walking her cute doggies. Sienna's used to being attached to anyone she's seen with even though she also has had plenty of long time partners. She's even earned herself the nickname of Slutty Sienna but she's denied that she's promiscuous. So what do you think - is Sienna really slutty?
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