Mannequin legs are starting to replace terra cotta pots as planters for real or faux plants.
Check out this beautiful ones from Muck N Brass in London
Mannequin legs make the planter decorative as well as functional.
Here are other examples from Pinterest.
This one is a little X-rated.
If are looking for mannequin legs, you can find both new and used mannequin legs at MannequinMadness.com