Introduction: The present study presents a view of information literacy not primarily as skill but as different practices, situated within specific social and institutional contexts. It suggests that questions of authority of knowledge are central to understanding people's information practices. Method: First, the concept of information practices is developed, drawing on theories from information and library research as well as ideas from the New Literacy Studies, the author's field of research. In a second step, a qualitative study of fourteen pregnant women's information practices was conducted. Analysis: Interview transcripts (twenty-six in total), pregnancy books and Websites were thematically analysed to draw out what characterises the women's information practices. Results: The results of this study suggest that the women's information practices were shaped by their constant assessments of knowledge for its trustworthiness. Social networks, including online, played a key role in the women's evaluation of different sources of knowledge. The women examined "authoritative knowledge" in relation to advice received from different sources and in the face of at times opposing knowledge claims. Conclusions: Understanding contemporary information practice in everyday life requires researchers to pay greater attention to how knowledge is constructed and assessed by those seeking and using information. More attention needs to be paid to the role of written information, found on the Internet, in people's information practices.