This pattern is originally from my book Retro Crochet Style, which can be found wherever you buy books or at this link:
https://savannah-stitches.com/blog-posts/preorder-my-book-retro-crochet-style-lt3

This pattern is written for 9 different sizes (traditionally XS-5XL in the US), but it includes instructions on how to adjust it to other sizes. All sizes have been tested by crocheters of all levels; this pattern is best suited for advanced beginners.

The pattern is written in English using US terminology. It includes step-by-step instructions and images, including instructions to make the shorts to your specific measurements.

Materials:
5mm crochet hook
1375-2790 total yds [1259-2552 m] of aran/worsted/size 4 yarn (depends on size)
Scissors
Stitch markers
Tapestry needle

I've used wools like We Are Knitters The Meri Wool and acrylics like Lion Brand Pound of Love to make this; I recommend using a similar acrylic or wool.

Photo credits (Instagram; left-to-right in combo photos):
@emstitchesstuff
@savannah.stitches
@auburn.threads
@emma.j.crochet
@keeanucrochets
@kayladashrachel
@lenebae12
@apollos_devotion
@emstitchesstuff
@a.pa.lf
@ilex_holly12
@sunfish.crochet