Charlee Roundhill has designs on a designer purse.

It’s a haute must-have the soon-to-be 30-year-old feels she deserves — in celebration of her milestone birthday on Wednesday.

But the couture carryall that’s caught her eye isn’t one in the bunch of highly coveted bags from Matthieu Blazy’s new Chanel spring/summer 2026 collection — finery that recently sent NYC’s most elite pouring into the streets for first grabs at the goods.

Charlee Roundhill shows off a 1996 Celine Macadam Dome bag that is a perfect “birthday bag” for those born in that year.

Roudhill’s dream pocketbook isn’t even a secondhand piece from the early 2000s, despite fashion’s unflagging infatuation with Y2K-era regalia .

Instead, the millennial has her sights on an antiquated accessory from 1996 — the year she was born.

“It’s my birth year bag,” Roundhill, a tech user experience specialist from San Francisco, California, told The Post of the Lady Dior handbag, named in honor of Princess Diana, who put the petite leather looker on the…