Well, surprise surprise. This week WWD reported that the worldâ€s no. 1 pop star has in fact signed a deal with Coty to create a line of signature Lady Gaga fragrances.

If Madonna's cone bra could inspire a fragrance bottle, our money's on Lady Gaga's bubble dress playing a role in future fragrances

The same Coty executive who denied the rumors a few months back, Senior Vice President of Global Marketing in the Coty Beauty division Stephen Mormoris, said the agreement was worked out last week, and the first of several future Lady Gaga womenâ€s scents is set to launch in spring 2012.

We love to say I told you so – note this direct quote from a past Signature9 post on the subject: “Even though Gaga is not working on a scent yet, weâ€re betting she will be at some point.”

Bloggers around the Web continue to speculate what Gagaâ€s perfumes will smell like, with some guessing it will have rubber or hairspray notes. {Fashionista} We can only hope none of the fragrances smell like raw meat (BTW is anyone else wondering how Gaga kept from stinking like rotting flesh at Sunday nightâ€s VMAs?).

Anyhow, weâ€re sure the beauty execs at Coty will come up with something wearable. Weâ€re sticking to our original prediction that the most interesting part of the fragrances will be their bottles.

Shakira at the launch of her S fragrance in Madrid

If you’ve ever wondered why it seems that every singer or actress seems to be pushing a perfume lately, it’s because of the high margins. Celebrities can get paid an upfront of anywhere from $2 million to $5 million. If the fragrance does well? Annual revenue can be as high as $100 million a year, with very little effort in terms of promotions or marketing. {Fashionista} Where do we sign up?

Celebrity scents have skyrocketed in popularity over the past few years and we’ve covered some of those from Jennifer Aniston, Sarah Jessica Parker, Beyoncé and more recently (as in yesterday) Shakira.

If a fragrance could give you a cavity, it would probably have a name like Lollipop Bling

Madrid held the celebration for Shakira’s new S perfume boasting notes of benzoin, amber, vanilla, fresh woods and Indian jasmine Sambac. This is the Colombian singer’s second fragrance. The first, Amuleto, was launched in France in 2008.

Mariah Carey, in all her sweet, pink and sugary, 12-years-old forever glory has also indulged fans with the latest addition to her fragrance repertoire with Lollipop Bling. Yes, it does seem appropriately named for  smelling like a more “sophisticated interpretation of bubble gum.”

Now, we know what you’re thinking, candy-scented perfume? Well, looking a little deeper at the brand’s strategy it becomes more sensible. The product is not in a fancy glass bottle- but a gumball machine! Capitalizing on her younger audience, Mariah has teamed with Elizabeth Arden who’s no stranger to the fragrance industry (they also produce Britney Spears’ scents).

Elizabeth Arden is planning on marketing the scents–Honey, Mine Again and Ribbon–using gumball machine gift sets and a lollipop rollerball fragrance set starting this Fall. (The scents sans gimmicky packaging are $35 a pop (pun intended), and will be available at department stores nationwide in July 2010.)