One walk down Macy’s fragrance aisle, and you might think that a perfume deal is required to live in Hollywood. Everyone from singers, to actresses to celebutantes are slapping their names on sparkly bottles encasing sweet scents – and much to their manufacturers’ delights, celebrity-branded fragrances are flying off the shelves.

But even in today’s era of veritable perfume-mania, there are still several mysterious A-listers who haven’t entered the sweet-smelling ring. In fact, we’re actually curious why these six names below haven’t inked deals yet – and would be the first in line at Macy’s, if they did.

Oprah

Can you imagine if the Queen of Daytime launched a fragrance line? We’re all aware of the “Oprah Effect” on products and services – and everything this media tycoon attaches herself to becomes instant gold. In addition to the certain frenzy an O fragrance might cause, we also think her scent would be a comforting and pretty one. Given Oprah’s love of all things luxurious, we imagine her fragrance to have a distinct gourmand note like cinnamon, vanilla or chocolate, laced with luxe notes like amber and sandalwood.

George Clooney

Basically a real-life James Bond, this international man of mystery makes men jealous and ladies swoon. We think Clooney’s old-Hollywood vibe and bachelor lifestyle would make a distinctly sexy male scent. We think super masculine notes like pepper and firewood would comprise a Clooney fragrance.

Michelle Obama

Mrs. President has spent the duration of her husband’s presidency making major strides in the fight against childhood obesity and improving the lives of military families. And each step of the way, she wows us in her all-American, every-woman style. We imagine her scent might mix clean, soapy notes with outdoor scents like freshly cut grass.

Matthew Perry

Since the “Friends” finale, super fans of the show have only been able to get their Perry fix through syndication. But this month, the man formerly known as endearingly goofy Chandler Bing made his small screen comeback in ABC’s “Mr. Sunshine.” We think a Matthew Perry fragrance might sell well in the midst of his reemergence. Not to mention, former “Friend” Jennifer Aniston also recently launched her namesake fragrance – which provides a ready-made tie-in for department stores.

Anne Hathaway

Annie’s classic style and timeless beauty, combined with her unwavering success in Hollywood creates the perfect storm for a fragrance. She’s already the face of Lancome’s woodsy “Magnifique,” but we think her “girl-next-door” charm would translate beautifully to her own namesake fragrance collection. We imagine a light and pretty floral fragrance featuring freesias and lilies. And with Anne’s upcoming gig as co-host of the 2011 Academy Awards, we can’t think of a better time for a fragrance launch!

Justin Bieber

This one is a stretch – but with record success of his namesake nail lacquer collaboration with industry giant OPI, we know a Bieber fragrance would create a sales frenzy. Of course, a “Bieber Fever” scent would appeal to young girls – and prominently feature sugary notes like cotton candy and fruit punch. Coming off of a critically-acclaimed Grammy Awards performance, and in the midst of developing his own retail store at The Grove in Los Angeles, Justin might just hit fragrance gold if he were to release a namesake scent today.

There are so many other A-listers we’d love to see develop a fragrance. And as much as industry insiders scoff at Hollywood’s heavy hitters for diving into the fragrance pool, celebrity-branded perfumes continue to be some of the market’s biggest sellers. We can’t wait to see what else the celebrity set has in the perfumed pipeline. Is there anyone in particular you’d love to see put his or her name on a perfume bottle?