I think it's really hard to tell when comparing models because a lot of them are not the heights they say they are and of course the way they are standing can affect things. Freja is supposed to be 5'10 and I would say in this pic Cat is about an inch taller than her.
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But, I've seen pics of the 2 where Cat looks 2-3 inches taller than her, so I don't really know what to think.