Earth pony time !!! I headcanon that all earth ponies share the various stallion body types featured in the show . I took a bit of inspo from Trouble Shoes for Pinkie here

Pinkie is amongst the largest of her family, taking after her father in terms of size and head shape. Despite her size, she's remarkably flexible and spry for an earth pony. She's by far the largest of the group, and uses her size over her friends to wrap them up in a big group hug all together <3