In the past years Hallgerður has exhibited work in The Photographer’s Gallery in London, the Hasselblad Center in Gothenburg, Fondazione Fotografia Modena, Galleri Image in Aarhus, the Reykjavik Museum of Photography, and the Reykjavik Art Museum. In 2016 she published her first photo book, Hvassast, portraying the eerie beauty of the Icelandic everyday, and in 2018 her book of poetry and pictures, Límkenndir dagar, was published by Flóra, Akureyri.