> 
> Mum bought me a new swimming costume, an old-fashioned one in
>  blue-and-white gingham with “support.” It was supposed to **have a kind**
> **of 1950s look to it**, the sort of thing Marilyn might have worn.
> 
> 
> 

I can understand `have a XXX look` part but can't understand the `to it` part.

What's the function of `to it` and what does `it` refer to?

I searched some examples,

> 
> At that moment, his face had an unexpectedly vulnerable **look to it**.
> 
> 
> 

But I don't know if it is the same with my first sentence.