What is the meaning of “more is more”?

In a documentary there was a sentence in which it says "this is the city of more is more".

I already knew the meaning of less is more, but that was new to me.

And when I was trying to find out a good definition in dictionaries, to my surprise, there was nothing (not, at least, in ODO, TFT, Cambridge, MW).

The meaning, however, was quite clear for me from the context.

But I think it's worth asking the meaning of this phrase here.

Solution 1:

More is more is just the opposite of the saying "less is more". It may be used to suggest that in some cases, "less" is not the better or more appropriate way to go:

• There is a saying "Less is more"* which means that when something is understated or done in a low-key manner, it's much more effective than if it were done with a lot of fanfare and exaggeration.

• "More is more" would be a variation, the flipside, of the above philosophy.

(The Phrase Finder)

• The "city of more is more" suggests the idea of the "city of excesses".