See photos of pregnant Sienna Miller showing off baby bump in bikini

See photos of pregnant Sienna Miller showing off baby bump in bikini

The 41-year-old model is already the mother of daughter Marlowe, 11. Miller welcomed the little one in July 2012 with then-boyfriend Tom Sturridge.

​The 41-year-old model is already the mother of daughter Marlowe, 11. Miller welcomed the little one in July 2012 with then-boyfriend Tom Sturridge.