If you happen to see married women furiously scrolling through their husband's iPods, we know why. Candy coated pinup Katy Perry and 'S+M' sexpot Rihanna topped a poll of the most cheat-worthy celebrities.

Perry snagged the No. 1 spot with RiRi hot on her heels at No. 2 on the annual 'Hall Pass' poll on extra marital dating site AshleyMadison.com. The 'Hall Pass' is the colloquial term for a list of fantasy partners -- usually celebrities -- that "normal" people can cheat on their significant others with no consequences. AOL Music reports that Perry and Rihanna were the only singers on the list, which also included Mila Kunis, Salma Hayek, Jennifer Aniston, Scarlett Johansson, Sofia Vergara, Blake Lively, Kim Kardashian and ... Sarah Palin. A lid for every pot, we suppose!

While Perry is newly single, reports say she's still in love with soon-t0-be ex husband Russell Brand -- so she's not quite ready to mingle just yet. While we're sure she's flattered by being the reigning champ of cheating husbands, considering Brand's recent divorce filing and rumored sex addiction, this may not be the title most ideal for her right now.

On the other hand, Rihanna is officially single, but gentlemen may have a hard time breaking her of her Chris Brown habit. There have been loud whispers of the pair reuniting for trysts in his recording studio ... Even though he's dating model Karrueche Tran. Maybe Brown's votes are what pushed Rihanna to the second place spot!