LESLEY-ANN JONES.The pig's trotter, which is rich in collagen, has become the latest beauty fad to help banish wrinkles. The trend began in Japan where a string of "beauty restaurants" are serving "collagen hot pots" and now the craze has moved to New York..March 13th, 2009.headshot portrait black top.CAP/FIN.©Steve Finn/Capital Pictures.