Sienna Miller flaunted her California tan in a sexy cut-out dress as she went to lunch with her fiancé Rhys Ifans on Saturday in London. Check out how to get her look here. Afterwards, they stopped to browse in a children's clothing shop — as a soon-to-be aunt and maybe future mother it's no surprise she's getting excited about baby things. The couple is reunited after spending time apart while she filmed G.I. Joe in the US, and from the looks of it, they seem to already be back to their London routine.

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