[3] At the age of 14, Aasen was discovered by Donna Ioanna, a model agent, while she was shopping at a mall for Christmas presents.
[6] In 2013, she was referred to as a face to watch by Vogue, alongside Martha Hunt and Kelly Gale.
[7] She has appeared in adverts and catalogues for Tory Burch, Victoria's Secret, H&M, Nasty Gal,[8] Dsquared² and Saks Fifth Avenue.
She walked the runways of Prada, Loewe, Louis Vuitton, Fendi, Blumarine, Just Cavalli, Salvatore Ferragamo, DKNY, Derek Lam, Carolina Herrera, Anna Sui, Cushnie et Ochs, Tory Burch and Jeremy Scott.
She has been featured on the cover of fashion magazines, including Dazed and Confused, Elle and Madame Figaro, as well as editorials for Numéro, Vogue Deutschland [fr], Vogue.com, V, LOVE, Marie Claire, Flair [fr], CR Fashion Book, Exit, 10 Magazine and Russh.