1. Answer: It depends on everyone's taste and these rankings change all the time. According to RankMyPorn, at the moment, the top ranked Blondes Female Pornstars in the world are: Mia Malkova, Kenzie Reeves, Kayden Cross, Riley Steele, Elsa Jean, Kayla Kayden, Katie Morgan, Kat Dior, Samantha Saint, Madison Scott, but these will change based on what people vote.
2. Answer: It changes. You can see the latest rankings on RankMyPorn.com and also vote on it for free.