If you're a petite with a regular torso and short legs or if you're 5'0" or under, you may need extra short petites pants. There's quite a variation in lengths among manufacturers, so it's always a good idea to measure inseam length on pants that fit you well and then look for that inseam length when you're shopping for pants. Here are some retailers that offer extra short petites pants.
Kohl's offers extra-short petite pants with inseam lengths of 27", rather than the 29" length that's standard for petites pants at Kohl's. Not all styles are available in the shorter length, but I found eight different styles by searching "short petite pants" in the petite pants category.
Lands' End offers jeans and pants in several inseam lengths. Lands' End offers free hemming with some petite styles in lengths ranging from 25" to 31" at one-quarter inch intervals. You can also opt to purchase them unhemmed. Other petite styles come in three inseam lengths - 25", 28", and 30". There's a broad range of sizes available in petite jeans from 2-18.
Catherines Plus Sizes offers some petite clothing. All pants classified as petites at Catherines have a 26" inseam. The range of sizes available in petite pants varies by style and may include 0WP - 5WP.
Willow Ridge offers petite short pants with a 26" inseam in sizes 4PS - 20PS. Regular petite pants from Willow Ridge have an inseam of 28".
Bedford Fair offers petite short pants with a 26" inseam in sizes 4PS - 20PS. A 28" inseam is standard for regular petite pants.
AmeriMark has petite short pants, which vary by brand in inseam length. The Alfred Dunner brand is available in petite short with an inseam length of 26" and petite with an inseam length of 28". The Bendover brand comes in petite short with an inseam length of 25" and petite with an inseam length of 27". A few sets are available in petite short lengths also. Size availability varies by style within the 6 - 18 range.