Kourtney K -- 'American Idol'?

12/1/2010 5:15 AM PST BY TMZ STAFF
Here's eldest Kardashian sister Kourtney Kardashian at an event in NYC on Tuesday (left) -- and former "American Idol" runner-up Adam Lambert back in May (right).

1130_kourtney_lambert_sayin
One is wearing too much makeup.

We're just sayin'.