[10] In October 2012, she had her first significant modelling assignment, being chosen to walk the runway for Yves Saint Laurent's spring/summer 2013 fashion show, designed by Hedi Slimane.

[7][8] Six months later, she attracted attention when she took part in the Marc Jacobs fall/winter 2013 fashion show, where she walked the runway wearing just a pair of hot pants and long black gloves.

[15] McMenamy has also modelled for other fashion brands, such as Louis Vuitton, Fendi, Moschino, A.P.C., Balmain, Emilio Pucci, Vionnet, Jean Paul Gaultier, Kenzo, and Giles Deacon.

Additionally, she has worked with some of the fashion industry's photographers like Juergen Teller, Peter Lindbergh, Jean-Baptiste Mondino, Ellen von Unwerth, and Terry Richardson.

[5] In October 2020, McMenamy appeared with her mother on the cover of the 40th anniversary issue of i-D magazine, photographed by Alasdair McLellan.