I have used this site for many years for downloadable custom sized sewing patterns for men, women and children... All sizes XS to XXXL It is very easy to use and a lot of good skirts and shirts are free. Other patterns are very reasonable, less than $3 and often less. Based in Geneva, good English instructions, Suits the experienced sewer but beginners can start quickly with some styles. I'm very confident recommending this site without reservation.
Lekala has a great selection of patterns at unbelievably low prices. I love getting patterns from them. I can get the patterns custom fit to my measurements. I also do sewing for others and I can get them from Lekala custom size. Their patterns come with full instructions and are extremely easy to use.