How to create a FacetGrid stacked barplot using Seaborn?

The simplest code to achive that result is this:

import seaborn as sns
import matplotlib.pyplot as plt
sns.set()

tips=sns.load_dataset("tips")
g = sns.FacetGrid(tips, col = 'size',  row = 'smoker', hue = 'day')
g = (g.map(sns.barplot, 'time', 'total_bill', ci = None).add_legend())

plt.show()

which gives this result: