Pinafore is the shortest of the three and has the most obvious signature tunes.
From the dispatch.com
Knee-high boots paired with school uniform-like pinafore dresses conveyed the mood.
From the independent.co.uk
My mom was always just like a little girl who never grew out of her pinafore.
From the time.com
Her mother made many of her clothes, including ruffled pinafore dresses and hats to match.
From the thestate.com
A child's garment to wear at school or for play would be a pinafore.
From the en.wikipedia.org
Pinafore songs and images have been used extensively in advertising.
From the en.wikipedia.org
I started to get obsessed with my upstairs outfit, the pinafore.
From the sfgate.com
Dressed in boots and a navy pinafore dress, with her blond hair scraped back, she means business.
From the independent.co.uk
Also, in more formal British usage, a distinction is made between a pinafore dress and a pinafore.
From the en.wikipedia.org
More examples
Jumper: a sleeveless dress resembling an apron; worn over other clothing
A pinafore (colloquially pinny in British English) is a sleeveless garment worn as an apron.
(pinafores) sleeveless dresses or garments worn over dresses.
Originally used to protect dresses from dirt, it was adopted as a fashion piece and worn as a sleeveless dress or over a blouse.
(from the operetta by Gilbert and Sullivan)
1 An apron, especially one with a bib, originally pinned to the front of a dress; a sleeveless wraparound garment tied at the back, worn to protect the clothes. 2 Historical A collarless sleeveless girl's garment worn over a dress and fastened at the back.
A sleeveless garment that looks like an apron, usually worn by young girls.
N. 1. Pinafore. 2. Jumper. This is also called a pinny.