WOMEN's:
Petite, Women's Petite, Half-size, Misses/Missy, Junior, Women's/Plus, and/or Tall.

MEN's:
Regular men's, Tall, Short, Big, Young men's. Shirts are sold by neck measurement (circumference) and sleeve length; pants by waist measurement and in-seam leg length.
 

For detailed information about general guidelines for men's and women's size ranges and sizes, check ISU Extension publication PM 1648, Consumer Choices: Finding Your Best Fit.

CHILDREN's:

Infant or baby (generally stated in terms of months of age or weight of the child),
Toddler (1 to 4 T),
Children (2 to 6X),
Girls (7 to 14); with slim, regular, and chubby,
Pre-teen or young junior (2 to 9) for older girls,
Boys (6 to 20); with slim, regular, and husky.