Fendi "B.Bag" $27,700* Hailing the return of the structured bag, this might be Fendi's best seller since the Baguette. Although the white lambskin runway bag (pictured on the runway) was well-received, the $27,700 black crocodile version is truly coveted. Hermès "Birkin" $20,000-plus* Nearly all Hermès Birkin bags, named after English actress and '60s fashion icon Jane Birkin, are special orders, like this red leather version. Most Birkins are upwards of $20,000, but the final price depends on skin and hardware. Yves Saint Laurent "Muse" $18,990* Seen on the arm of everyone from Kate Moss to Jessica Simpson, the roomy yet refined Muse riffs on the traditional bowling bag. Linda Evangelista's sage green version, pictured above at Paris Fashion Week last February, is now available in white crocodile for $18,990. Prada "Frame Bag" $15,090* This structured crocodile bag, embossed with the signature Prada emblem, made its first appearance on the Autumn/Winter 2006 runway in Milan. It is available in the tan color shown above, known as Krusca. Zac Posen "Alexia" $15,000* With his first line of bags, Posen has created the ultimate homage to the '70s. This blue crocodile version oozes opulence.