Whose topless magazine cover is hotter?

Rihanna vs Keira Knightley

I'm sorry I've been M.I.A for 2 days, had an accident but I'm ok now, Thank God. Don't know why a sane being would take one-way on 3rd mainland bridge around 8pm!! Who does that? I did not get a full glimpse of the car but it looked like a Navy car. Oh well, thank God for the gift of life. Thanks to those that called too God bless you.