Most women view turning 30 as a major milestone for a number of different reasons. Sure, you can argue that age is nothing but a number, but at the same time, hitting 30 is of particular significance: Your 20s are officially over, you're almost 10 years out of college, and you're likely considering the greater meaning of your existence.
As such, we've spent a fair amount of time pondering what turning 30 means in regards to personal style. We've already dug deep into the items you should probably toss by the time you're 30, and now we're thinking about the things you should know by the time you turn the big 3-0. Click through our gallery to see the list.