Sienna Miller chose a bright pink dress to attend a charity event in England today. She was joined by her pregnant sister, Savannah, Pippa Middleton, and Poppy Delevigne for the dinner, which was thrown by All Saints in support of the Too Many Women organization. Sienna and Savannah's mom, Jo, went along too on what was apparently her birthday! Savannah tweeted that Jo had a memorable run-in with Read more

There was an occasion for Sienna Miller to celebrate her new JewelMint collaboration last night at Ralph Lauren's Wimbledon Party in London. She, along with her mom, Jo, and older sister, Savannah, toasted the annual tennis festivities with legendary player Boris Becker. Sienna, who runs Twenty8Twelve with Savannah, selected a bracelet to be sold on Kate Bosworth's JewelMint. The "Sienna" Read more

Sienna Miller held hands with a friend on Saturday after a performance of her show Flare Path in London, and this morning she switched gears from drama to fashion in order to join her sister Savannah at Selfridges to launch their new Twenty8Twelve pop-up shop. It seems the Millers decided to forgo showing their designs with a big show during Fall Fashion Week, instead choosing to have exclusive Read more

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Sienna Miller, who partnered with her sister Savannah on the line Twenty8Twelve, also served as house model for the line's Spring 2011 lookbook. The downtown chic but feminine styling makes the lookbook not only pretty irresistible but super useful — we took some notes. Check it out for yourself. Read more

Even though sisters Savannah and Sienna Miller left the brand earlier this year, the ultra-cool Twenty8Twelve girl that they created is still very much present in the Fall '12 collection. Designers Vanessa James and Elsa Elphick offered a '60s mod grouping for the season, featuring Beatnik-style babydoll frocks with tights, slim-fitting trousers and flawlessly-cut coats — all perfect pieces for Read more

Sienna Miller's engagement ring was on display last night as she left the Groucho Club in London. She's apparently engaged to her boyfriend of one year, British actor Tom Sturridge. It's Sienna's second engagement, after she accepted Jude Law's proposal back in 2005. That relationship famously didn't work out, and Sienna and Jude parted ways for the last time in 2011, shortly before she got Read more

Sienna Miller had another evening at the theater in London yesterday performing in Flare Path. She rocked a familiar green jacket in the latest installment of what's becoming her nightly post-show fashion parade. She's incorporated pieces from her own Twenty8Twelve collection into the mix after launching a recent pop-up shop at Selfridges with her sister Savannah. The girls have since moved the Read more

Sienna Miller hit London's Groucho Club for lunch today after flashing a smile last night on her way out of the Theater Royal, where she performed in Flare Path. Yesterday was a busy one for the actress, who kicked off her afternoon by launching her Twenty9Twelve pop-up shop at Selfridges alongside her sister Savannah. Sienna spoke about their hopes for the label, saying, "We’d love to do maybe Read more

Sienna Miller showed off her latest post-show ensemble last night following a performance of Flare Path in London. She was still rocking her acid washed jeans from earlier in the week, which she paired with the bright yellow oxfords she's had since 2009. Sienna had a special guest for yesterday's event, as her mom Jo was on hand to see the play. Sienna joined another of the Miller girls, Read more