Ah that's such a cute outfit!!! I love how you paired the leather leggings with a high neck cable knit sweater!! *applause* it's a little bit edgey, but not too "look at me" ish, I love it!! And the shoes are adorable. Not too sexy for the office, I think, but if you are worried, you could swap the leather leggings for other black pants, although that would make the outfit less awesome, but still cute!! I say wear it though!!!
Super cute, but I'm not sure. I also work in a business/financial office setting and where I work, I'd be called in for a sit-down with my office manager (female), and lectured on my outfit, if I wore what you selected. I love your picks, but it wouldn't fly at my job, however everyplace is different. I hope it works out for you, though. Good luck.
It wouldn't be considered too sexy, but the leather pants might be too casual for a conservative office. It depends on the dress code and customs at your job because offices vary a lot in what's acceptable and not.