Elsaesser grew up in Cambridge, Ontario.<ref name="Kyte" /><ref name="Hewitt" /> She developed an interest in fashion shopping at second hand stores.<ref name="Kyte" /><ref name="BSBprofile">{{cite web |title=How Hayley Elsaesser Challenged the Fashion Industry's Status Quo |url=https://baystbull.com/how-hayley-elsaesser-challenged-the-fashion-industrys-status-quo/ |website=Bay Street Bull |access-date=29 September 2022 |date=31 March 2022}}</ref> She studied at the [[Queensland University of Technology]], graduating in 2013.<ref name="Kyte">{{cite web |last1=Kyte |first1=Kathryn |title=Catching Up With Toronto's Buzziest Designer, Hayley Elsaesser |url=https://29secrets.com/style/behind-the-designer-hayley-elsaesser/ |website=29Secrets |access-date=29 September 2022 |date=22 August 2018}}</ref> Her [[Eponym|eponymous]] fashion line was launched the same year.<ref name="RSN2016">{{cite web |title=Emerging Canadian Designer Hayley Elsaesser On Her Crazy New Collection & Body Diversity |url=https://www.realstylenetwork.com/fashion-and-style/2016/04/emerging-canadian-designer-hayley-elsaesser-on-her-new-collection-body-diversity/ |website=Real Style Network |access-date=29 September 2022 |date=8 April 2016}}</ref><ref name="Kilkenny">{{cite news |last1=Kilkenny |first1=Carmel |title=Toronto Fashion Week winds down |url=https://www.rcinet.ca/en/2016/03/18/toronto-fashion-week-winds-down/ |access-date=29 September 2022 |work=RCI |date=18 March 2016}}</ref><ref name="Yakobi">{{cite news |last1=Yakobi |first1=Hannah |title=Toronto Fashion Week Spotlight: Hayley Elsaesser |url=https://fashionmagazine.com/style/toronto-fashion-week-spotlight-hayley-elsaesser/ |access-date=29 September 2022 |work=FASHION Magazine |date=5 September 2017 |language=en}}</ref> Elsaesser opened a flagship store on [[Toronto]]'s [[Queen Street (Toronto)|Queen Street West]] in 2015.<ref name="Agnew">{{cite web |last1=Agnew |first1=Caitlin |title=Q&A: Hayley Elsaesser, the city's buzziest new designer |url=https://torontolife.com/style/toronto-fall-style-guide-2016-hayley-elsaesser/ |website=Toronto Life |access-date=29 September 2022 |date=20 September 2016}}</ref> She moved the business online in 2020 and relocated to Hamilton, Ontario.<ref name="Hewitt">{{cite news |last1=Hewitt |first1=Fallon |title=‘A creative paradise’: Toronto designer Hayley Elsaesser makes leap to Hamilton |url=https://www.thespec.com/life/fashion-style/2020/11/26/a-creative-paradise-toronto-designer-hayley-elsaesser-makes-leap-to-hamilton.html |access-date=29 September 2022 |work=The Hamilton Spectator |date=26 November 2020 |language=en}}</ref>

Elsaesser has dressed celebrities including [[Katy Perry]] and [[Miley Cyrus]].<ref name="Moneta">{{cite news |last1=Moneta |first1=Caitlan |title=Toronto's Hayley Elsaesser Designs for Her Musical Muse Miley Cyrus |url=https://fashionmagazine.com/style/hayley-elsaesser-miley-cyrus/ |access-date=29 September 2022 |work=FASHION Magazine |date=23 November 2016 |language=en}}</ref> Her designs appeared in [[Tegan and Sara]]'s video for the single ''U-Turn''.<ref name="Kyte" /><ref>{{cite news |title=TEGAN AND SARA RELEASE SHORT FILM INSPIRED BY “U-TURN |url=https://themusicexpress.ca/tegan-and-sara-release-short-film-inspired-by-u-turn/ |access-date=29 September 2022 |work=The Music Express}}</ref> In 2022 she partnered with Smirnoff to design the limited edition Very Berry Cool collection, using coolant material.<ref name="NewswireVBC">{{cite news |title=Toronto Designer Hayley Elsaesser Creates Very Berry Cool High Function, High Fashion line |url=https://www.newswire.ca/news-releases/toronto-designer-hayley-elsaesser-creates-very-berry-cool-high-function-high-fashion-line-828987862.html |access-date=29 September 2022 |work=www.newswire.ca |date=1 June 2022 |language=en}}</ref> She has previously worked with [[Nike, Inc.|Nike]], [[Coors Brewing Company|Coors]] and [[Taco Bell]].<ref name="Hewitt" />

[[Category: Living people]]