What to wear?

I got this sweater dress (in a couple of colors) right before I came back to work. (And for less than what it's marked at right now! Like way less!)  I love it. It fits well. It hides baby belly. It's comfortable. And it will help me dress up at work since I can usually be found in jeans. (Sad, but true.)

But...I don't know what to wear over. (Just over, no under since that isn't conducive to pumping in the office. Ugh. I'm totally over *that* already, but that's a story for another day.) I can't exactly wear sleeveless in the office right now. I assumed I'd have a cardi to throw on over it already at home, but I'm totally hating my wardrobe right now. Also, I don't want to invest in anything expensive either. I'm cheap and I kid you not, the past two mornings my work clothes had spit up on them before I left the house. Plus, I want something that will transition well and I can wear in the spring too.

So, I need some help. Who has a good idea? A bright pink cardigan? I dunno. Please share some links, my fashionista friends! Online shopping is for me.