We've looked at a few mirrored tub bases before and they are always really popular. I think this design could be an easy, straight forward DIY to give a retro glam Hollywood look to a bathroom. It's also a pretty inexpensive design to recreate.
Like the idea of a mirrored tub base, but want something more elegant?
Then you'll want to check out this one (personally, I love it):
And here's an even simpler mirrored tub base design you could absolutely DIY: