A great day to night look can be as simple as adding a jacket! That way, when you've got school / work and wanna look cute, but then have a dinner or something right after, with no time to go home and change / get ready again.. no stress!
That's what I did with this outfit but, in my case, I had to shoot two different interviews, so instead of bringing an extra outfit to the studio.. I just brought along a jacket!
My top is from BCBG, jacket is from Top Shop, dark skinnies from American Eagle and the boots are Forever 21.