Sienna MillerSienna MillerShe was once one half of London's golden couple.

But now Sienna Miller has some interesting Valentine's advice for the ladies...

Stay single.

Sienna, who has finally split from Jude Law, admitted that she hasn't sent a Valentine's card this year, and she isn't expecting one.

"My advice to women is to stay single and stick with your female pals," she said at the London premiere of her new movie, Casanova.

"I have no boyfriend at the moment so that's why I've no special plans for Valentine's Day."

To prove her point, Sienna attended the premiere with her mum Jo and her sister Savannah as her dates.

And she'll be spending Valentine's Day in true Bridget Jones style... She's going bowling with her female buddies.

Jude with the mystery blondeJude Law with the mystery blondeSienna's ex, Jude Law, isn't following her example, however.

He's already been spotted out and about with a mystery blonde on (or near) his arm...