http://articles.latimes.com/2013/mar/10/local/la-me-fran-miller-20130311
For a few more inspirational pictures of yogis who have reached age 90, check out this link:
http://www.mindbodygreen.com/1-3674-1/6-Inspirational-Yogis-in-Their-90s.html
So, there it is, there’s no age limit on practicing yoga. Here’s to many more years on the mat!