Hayden got straight up pissed last night when she was leaving a party at L'Scorpion with Heroes co-stars Leonard Roberts (hot!) and Milo Ventimiglia (hotter!) and someone on the street mistook her for that other blonde starlet - Lindsay Lohan! Hayden responded tersely with "don't EVER call me that again!" Is there a celebrity feud going on between these two? Did Lindsay go after her BF Stephen Colletti (who is known to have a thing for blondes) at the party at The Abbey Monday night? Inquiring minds wanna know!