Ellingson grew up in Moreno Valley, California, where she graduated from Canyon Springs High School and won three trophies at the USA National Championships for her high school dance team. Prior to being discovered on the street, she went to college at the University of California, San Diego to study biology. After a test shoot, she was sent to Paris by her model agency, where she met John Galliano who put her on the map.
Ellingson first walked the runway in the Spring/Summer 2005 ready-to-wear shows. She has walked in numerous shows including Shiatzy Chen, Blumarine, Chanel, Christian Dior, John Galliano, Gucci, Valentino, Lacoste, Victorias Secret, Marc Jacobs, Oscar de la Renta, Zac Posen, Diane Von Furstenberg, Sophie Theallet, and Giorgio Armani. Her campaigns include Moschino, DKNY, MAC, Dolce and Gabbana, Charles David, H&M, and Tommy Hilfiger. She has graced the covers of Vogue, Marie Claire, Elle, D Magazine, GQ and L'Officiel internationally and has appeared in the pages of Allure, Flair, V, and i-D as well.
Her career with Victoria's Secret began in 2009, where she walked for the brand for 7 straight years. Ellingson and Emanuela de Paula were chosen to be spokeswomen for "Body by Victoria" by Victoria's Secret alongside Alessandra Ambrosio and Marisa Miller. She was also a featured model in the 2010 Victoria's Secret "SWIM" catalog. She is currently listed as one of the brand's 12 "supermodels" and was one of the featured models during the 2009 fashion show. In 2011, she became one of the brand's signature Angels, as well as the face of its perfume line VS Attractions and its new bra, Gorgeous. As of 2011, she became one of the faces of Clarins. .
In 2015, Lindsay co-founded luxury beauty label, Wander Beauty, where she currently serves as Creative Director.
In November 2013, after six years of dating, Ellingson became engaged to her long-term boyfriend Sean Clayton, a medical equipment salesman and former college football player. They were married on July 12, 2014, in Bluffton, South Carolina. The couple currently resides in Brooklyn, New York.
Aldridge was born at Saint Joseph's Hospital in Santa Monica, California, and grew up in a fashion-oriented family. She is the daughter of English artist Alan Aldridge and Playboy Playmate of the month Laura Lyons. Her siblings include half-sister Saffron Aldridge, who was the multiyear face of Ralph Lauren in the 1990s; full brother Franco Aldridge, also known as Franco Evans, who goes to a school Felsted was born June 27, 2004; half-brother Miles Aldridge, who is a fashion photographer and was married to model Kristen McMenamy from 1997 to 2013; and sister Ruby Aldridge, who was the face of Marc by Marc Jacobs.