We can't think of a better theme for free spirited Sienna Miller's wedding to back-on fiancé Jude Law! Perfect!

We were so sad when the pair broke up following cheating allegations back in 2005 after Law allegedly had an affair with his kid's nanny, but now that's all behind the happy pair. The Sherlock Holmes star reportedly gave Ms. Miller a ring over the holidays, so things have definitely gotten more serious since they reconnected in 2009.

A source close to the couple revealed to OK!:

    “She’s going for a ‘hippie-style flowers-in-your-hair’ wedding. She wants it to be in a small church in the English countryside with Jude’s children taking part in the ceremony. It will probably be in Dorset or Devon.”

The sexy British twosome has also recently nabbed a North London mansion ... big enough for the pair to settle down and start a new family.

Note to Sienna: If you have kids with Jude, make sure to hire someone who looks more like Nanny McPhee than Mary Poppins.

Reps for Jude Law and Sienna Miller tell X17online: "We don’t comment on our clients personal lives."