This is a hot fight!
One of the rare times I don't give Julia my vote, they both look very similar but Natalis body is slightly more toned (maybe that's where some of the 10 lbs she got on Julia comes from) and harder so she should be able to break Julias confidence after a hard fight.
I can't tell which if their bodies is hotter as they are both hot as fire, Julia has this arrogant expression on her face what I like on hot women but so has Natali. Conclusion is I can't give a vote for this question.