When it comes to celebrity look-alikes, we think that 'Glee' starlet Dianna Agron, who plays Quinn on the show, bears a striking resemblance to 'Sin City' actress Jessica Alba.

Although Agron, 25, is of Russian descent while Ms. Alba, 30, is Latina, both women have similar smiles and profiles. They also have high cheek bones as well as similar chins, although Alba's face is a bit more oval whereas Agron's is on the rounder side. Despite this, when Alba has her hair dyed blonde, we have to do a double take to make sure it isn't the 'Glee' actress!