The phrase "fashion emergency" refers to a problem or situation in which someone's clothing or style choice is perceived as urgent, problematic, or in need of immediate attention or assistance. Full definition
This little kit is perfect, I mean everyone needs a beauty and fashion emergency kit! (ladyinviolet.com)
These are a few tricks to quickly solve the most common fashion emergency (all using items you have around the house or office) so you'll never be caught unprepared again. (theeverygirl.com)
So if one of the earrings is missing, it's a genuine fashion emergency. (potterybarn.com)