although I stan for Rihanna WFL is my least favorite number 1 by her.
Irreplaceable was literally iconic when it came out. everyone on the school bus would do the "to z left to z left" dance! even the straight boys!! LMAO
This is a tough pick. We know Irreplaceable is iconic because it's older and still remembered, but We Found Love has some sort of voodoo "Believe" type appeal to it, and I can see it lasting long after EDM dies out...
Let's say that WFL is Rihanna's second most iconic hit, but Irreplaceable is-at most- Bey's third most iconic hit.
I'll vote WFL based on that.
We Found Love was like the start of EDM pop, it's very iconic because of that. While Irreplaceable sounds like all those ballads from Rihanna, Jordin Sparks, Chris Brown, Ne-yo from 2006-2009.