Go to Terrybicycle.com. They have a great line of plus size clothing but frankly you should be able to wear an L or XL in knickers. I am an size 18 and generally buy a L.
Another good website is teamestrogen.com.
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Private docent led mountain bike rides through Limestone Canyon. Go to
letsgooutside.org and register today! Also available: hikes, equestrian rides and family events as well as trail maintenance and science study.