Jennie Garth's success as a QVC fashion designer wouldn't be possible without her three daughters. "My girls are so encouraging and so supportive," Garth, 53, exclusively shared with Us Weekly while celebrating the newest collection of her Me By Jennie Garth fashion line. "They've seen me lost. They've seen me searching. They see me have successes and also big failures. Every time I try something new, they are just right behind me, supporting me so much.