What: Snowdon joined fellow celebs Laura Bailey, Georgie Thompson and Jessica Lowndes at John Lewis' Beauty Hall launch party. We can report that Lisa was the only one to flash her bra, in this sheer silk shirt paired with skinny jeans, but does the fact that she chose a style with a super cute Peter Pan collar make up for her fashion faux-pas?
Where: John Lewis on Oxford Street, London, 8 May
Bonus info: Model Noelle Reno gave Lisa a run for her money in a tangerine mini dress with waist cut-outs. See her look in our gallery below and let us know how her style compares with Lisa's revealing number.