Answer:
The French word for 'fun size' in women's clothing.
What's as small as a mouse but guards a house like a lion?
I am a box that holds keys without locks, yet they can unlock your soul.
I wear a red robe, with staff in hand, and a stone in my throat.
When young, I am sweet in the sun. When middle-aged, I make you gay. When old, I am valued more than ever.
I have two eyes in the front and a lot of eyes on my tail