When in Paris, Lady Gaga is staying loyal to the school of Jane Birkin. Over the weekend, the Mayhem musician turned date night with fiancé Michael Polansky into a tribute to an oft-forgotten art: the perfectly worn-in designer bag.

Gaga, who was seen heading to the Parisian hotspot Lapérouse, dressed up in a patterned maxi dress, sheer garters, and black glasses. She cradled a ladylike Hermès Kelly with gold hardware in her hand. The Birkin’s sister bag has been a staple in Gaga’s repertoire of late —mostly worn in the crossbody Kelly 15 size—but this addition stood out not for its supple, box-fresh leather, but rather for its lived-in look.

The top-handle bag looked like it had been put through the wringer: perhaps tossed around on the floor, folded in a few too many times, and scr

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