Synchronize subplot size

Question

I can make figures the same size by setting figsize when calling subplots, but how would I make subplots the same size and letting figure size change to make room?

import matplotlib.pyplot as plt
import numpy as np

# Some example data to display
x = np.linspace(0, 2 * np.pi, 400)
y = np.sin(x ** 2)

fig, axs = plt.subplots(2)
axs[0].plot(x, y)
axs[1].plot(x, y)

plt.show()

fig, axs = plt.subplots(3)
axs[0].plot(x, y)
axs[1].plot(x, y)
axs[2].plot(x, y)

plt.show()