Smaller boutiques also are a great resource.

For example, Sixteen Tons, a menswear boutique in Hampden, sells a number of pieces from Ben Sherman. Handbags In the City sells a Longchamp bag designed by Kate Moss and an MCM backpack adorned with the British flag. Sassanova, a shoe boutique in Harbor East, sells L.K. Bennett shoes, which became popular here after Middleton was photographed in them. Cupcake in Fells Point sells J Brand jeans, which have also been worn by Middleton.

"They are in demand," said Ellington West, an associate at Cupcake.

About a third of the inventory at Gian Marco Menswear, a men's boutique in Mount Vernon, is from British designers, according to Marc Sklar, president of the boutique. Garments by British designers are ideal for the colder, damper months of a Baltimore fall and winter, Sklar said.

"The English understand cold, rain and damp," he said. "They have a lot more thick, rich tweed and flannels. And they have very warm sweaters, too."

Twice a year, Sklar and his co-owner John Massey go to Europe to meet with fashion houses to produce collections for their boutique. Their trip always includes stops at fashion houses in London.

"They are very reliable and incredibly precise," Sklar said.

For those who don't have access to or can't afford exclusive boutique collections or garments from heavy hitters such as Burberry, Stella McCartney and John Galliano, consignment and vintage boutiques are likely the best option.

Chris Anderson, owner of Vogue Revisited, a consignment boutique in Roland Park, regularly sells popular British designs by Burberry and by Galliano when he was the lead designer for Dior.

"I get a lot of that in," she said. "It doesn't stick around long, though. When I get it in, it leaves the store fast."

Brit tips

Follow these rules, and you too can look like these British fashion-setters:

Victoria Beckham

Take structured silhouettes in mostly solid colors, add a fierce pair of heels and a "major" handbag, and you'll have a look similar to that of the celebrity turned designer.