When celebrities hit the red carpet, it's important for them to look polished and upscale, but when they are roaming freely on the streets, they can exercise their individual right to fashion. We've gathered a few flicks of some of your favorite stars in their natural habitats, wearing their favorite trademark pieces: from Mariah Carey's little white dress to Lourdes Leon's humble Converse. Now that you've studied the pros, what is your trademark accessory?

--Serena Kim

Back in March, we reported that Eva Mendes had teamed up with Calvin Klein Underwear to be the face of Seductive Comfort, a guaranteed-sexy collection for “curvaceous women” to be released this fall. Now here’s a look at the bombshell cubana wearing…well, hardly anything, in her first ads for the collection. Tame, they are not.