She wasn't just wearing them to compensate for her height beside the other models; everyone walking the show appeared to be wearing them. And they all survived, without breaking an ankle or cracking their dignity. I'm not being facetious; it takes a pro to walk effortlessly in these things. 

See, even Kendall Jenner was wearing them...

To hell with the height difference!

And who cares that the coat Gaga was sporting looks fit for a Victorian giant. That's fashion, dahlink.