There has been concern about younger people, and women in particular, not saving enough for retirement and how to encourage further saving. Therefore, this study, part-funded by the Fawcett Society in association with Scottish Widows, explores female millennials' attitudes and motivations towards pension saving and auto-enrolment through the use of 40 semi-structured interviews and a focus group. The findings show that while the introduction of auto-enrolment pensions is generally positively received, pensions knowledge is still limited and this intensifies the risk of under-saving for retirement among millennial women, particularly given women's diverse work histories.