In this edition of What Was She Wearing, you’ll find yet another round up of starlets with impeccable taste and refreshing outlooks—clothing-wise at least! We have the details of where they found their winning apparel, ranging from London’s Portobello Road Market to the vintage boutique Coquette in Los Angeles.

Peaches Geldof

Peaches Geldof caught your attention last month when she was spotted strolling through central London wearing a number of appealing outfit pieces. It pleases us to report that Geldof’s attire is all within a modest price range. Both her Red Floral Print Dress ($24) and Black Patent Flats ($12) are from London’s Primark and she covered up with a budget-friendly sweater from Topshop. Her specific cardigan already sold out, but there are other basic options available now, or you can check out Banana Republic’s Crewneck Cardigan ($69) in Gray Heather. Geldof completed her look with an awesome antique scarf from the Portobello Road Market and some Gucci sunglasses. We encourage market hunting to find your own unique pieces or browse PRM’s virtual version at Pret-A-Portobello. We also recommend Lucky Brand Jeans’ Summer Tapestry Scarf ($58) in green as another neckwear possibility.

Mary-Kate Olsen

The Sisters Olsen are a constant curiosity trigger for you fashion gurus, but it was Mary-Kate who most recently piqued your interest. Specifically, you wanted to know what in the world she wore to the after party for her new film The Wackness in New York City two weeks ago. Wonder no more, dear readers, for Olsen wore a superb Emilio Pucci vintage number that she purchased from Coquette. For a similar look to MK’s, we would accessorize Jovovich-Hawk’s Belinda Floral Dress ($395) with Kooba’s Metallic Ciel Gathered Bag ($495) and Nuovegioie’s Hammered Circle Double Chain Bracelet ($256). It is also worth noting that Miss Olsen had on a pair of Christian Louboutin’s Very Prive Platform Pumps in black crocodile. We also found some less pricy options for you: try Kate Spade’s Georgia Patent Croc Pump ($328) or Casadei’s Peep Toe Pump ($253).

Sarah Michelle Gellar

Many of you sent questions about the garments Sarah Michelle Gellar wore on a recent outing in NYC. Her flowy green dress is from 3.1 Phillip Lim’s Spring 2007 Collection, and thus no longer available, but we think Forever 21’s Spring Flower Chiffon Dress ($20) has a similar summery feeling. Gellar put some polish on her relaxed ensemble by adding a Helen Ficalora gold necklace with an assortment of charms ($115-$450). To finish achieving her look, go for some cute sandals like Nine West’s Jovialgrin Flats ($63).

Sienna Miller

Sienna Miller is a most-cherished influence on our site, as we can always rely on her to inspire our readers with her dressing expertise. Seen here waiting at a bus stop in London last month, Miller modeled the Elouise Pinafore Dress ($245, Diavolina 310.550.1341) from her own Twenty8Twelve line and a vintage pair of Vivienne Westwood boots. As alternatives, we like Jeffrey Campbell’s Canvas Strap Boots ($70) and a James Perse Cropped Linen Jacket ($295) to finish the look. —Jessica Amento, additional reporting by Cory Goldstein and Ashley Nachum