When you're in your second or third trimester, finding comfortable clothes can be one of the biggest challenges of being pregnant. Your growing baby bump and a few additional pounds can make it hard to find flattering clothes, and if you need to dress in business-casual or business-professional clothing during your pregnancy days, your choices may seem limited. Still, there are several ways to pull off a polished and professional look during pregnancy. All you need to do is focus on finding comfortable basic pieces, and then accessorizing with some of the latest trends.

The first must have for any office-going mom-to-be is a versatile pair of black pants. Black maternity pants can be matched with almost any type of top and will exude that professional and chic touch you need for the office. Stick with the black pants or trousers with an expandable waist so you don't have to worry about having your clothing tailored every month.

Another essential for the office is a cardigan or vest that fits you properly. Make sure your cover-up is designed for the pregnant mom so there's plenty of room for your baby bump. Avoid materials that are too clingy or ¾ sleeve cuts, because these can make you look much larger than you are. Stick with loose-fitting cardigans and tops that tend to drape rather than cinch at the waist.

A great way to look more pulled-together with any outfit is to accessorize properly. You can draw attention to your neck and face by wearing attractive, eye-catching jewelry with a square-neckline top and your hair pulled up so that the baby bump isn't the center of attention. A bright-colored scarf tied around your neck can also have the same effect. Just make sure that you're complying with the company dress code.

Finally, the right pair of shoes will finish up your polished ensemble for the office. When you're pregnant, it's especially important to wear shoes that fit you properly and select a pair that is made with expandable, breathable materials. Look for super-soft leathers and stick with the kitten heel so you're not putting too much pressure on your calves and legs during the day. A kitten heel is great for the office and will help you create that chic and stylish look you need.