I don't think it's an inherently bad reason, but there are some things I think you should think about.
Firstly, is this the only reason you're doing it? It sounds like the answer is "no", but it's worth digging deep to double-check. I mean, there's nothing wrong being a cis-gendered male who likes wearing female clothing. There's nothing wrong with being a feminine guy, or something outside of the usual gender binary either.
The worry here is - if you're just doing it to fit in with social norms, then you're just exchanging one mask for another, and if that's the case then you could find yourself just as unhappy on the other side, and at that point you'd more than likely ask yourself "what was the point of going through all that just to end up where I already was?"
Really, the point of transitioning is not for someone born male to become female (or equally from someone born female to become male), but rather it's about becoming your true authentic self.
Your true authentic self may very well be a girly-girl who loves all the stereotypical stuff that society says women are supposed to like, like ponies and the colour pink and frilly skirts. In that sense no, there's nothing wrong in that at all hun
on the other hand, you may be more of a tom-boy - the kind of girl who likes doing some (or even many) things that society says is "guy stuff" like being a car mechanic or a builder, or enjoying watching epic space battles in your favourite sci-fi series, or wearing trousers. If this is the case, you should not feel obliged to "be girly" just to fit another social stereotype.
I guess what I'm really trying to say here is -
no, it's not inherently wrong to fit a stereotype, just make sure that you're making the stereotype fit you, and not the other way around 
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