With “American Idol” as popular as it is, one might assume that last week's winner Kris Allen would be the biggest amateur singer in the world right now.

But British singing sensation Susan Boyle of “Britain’s Got Talent” fame is giving him a run for his money.

A Google search for “Kris Allen” yields almost 9 million results, but a search for “Susan Boyle” yields more than double Allen’s numbers, with about 24 million results.

That means the race is on as fans of the two unofficial reality show rivals battle it out to make their favorite amateur the Web's top searched star.

But we want to know what you think: who is your ultimate Idol – Susan Boyle or Kris Allen?

YOU DECIDE: Kris Allen or Susan Boyle? VOTE NOW

On the surface, the two couldn’t be more different – Boyle is a single Scottish woman who lives alone with her cat Pebbles, and Allen is a 23-year-old handsome Arkansas man married to a beautiful young wife.

VIDEO: Click here to see Susan Boyle's showstopping performance Sunday.

VIDEO: Click here to see Boyle's first performance on "Britain's Got Talent"

But the two actually have more in common than one might think.

PHOTOS: Click here for photos of Kris Allen.

PHOTOS: Click here for photos of Susan Boyle.

Both reality show singers – Allen the winner on “Idol” and Boyle a finalist on “Talent” – boast several fan sites. And both are classic underdogs: Boyle a 47-year-old who made her debut with an unkempt appearance, and Allen going into the finale as the projected runner up to judge-favorite Adam Lambert.

VIDEO: Click here to see Kris Allen's finale performance on "American Idol."

More than half of U.K. television watchers on Sunday night tuned in to watch Boyle sing "Memory" from the hit Broadway show “Cats” for her second performance on “Britain’s Got Talent.” One of the show’s judges, Piers Morgan, called Boyle “the most downloaded woman in the history of the internet.”

Similarly, Allen also broke a few records with his win – with more than 100 million viewers casting votes to send him to the top.

Cast your vote between now and Friday, May 29: Kris Allen or Susan Boyle? VOTE NOW