Which pink earth pony is known for her love of parties and laughter?

The pink earth pony known for her love of parties and laughter is Pinkie Pie.

Pinkie Pie is one of the central members of the Mane Six in “My Little Pony: Friendship Is Magic.” An energetic and eccentric earth pony, she works as a baker, caterer, and party planner at Sugarcube Corner in Ponyville. She represents the Element of Laughter and is devoted to making other ponies smile.

Her origin story explains why celebrations matter so much to her. Pinkie grew up on a gray, quiet rock farm. After seeing Rainbow Dash create a Sonic Rainboom, Pinkie felt sudden joy and organized a party for her family. That experience inspired her colorful personality and led to her three-balloon cutie mark.

Pinkie is sometimes mistaken for a unicorn or pegasus because of her exaggerated cartoon physics and unusual “Pinkie Sense.” She is actually an earth pony, with no horn or wings. Her pet alligator, Gummy, lives with her above Sugarcube Corner, and her full name is Pinkamena Diane Pie.