Pregnant Kourtney Kardashian insists she has lightened her hair in a baby-safe way.

The reality star - who is expecting her second child with partner Scott Disick - defended her decision to highlight her naturally dark tresses, arguing she did her research beforehand.

"I followed all of the guidelines from my doctor and took the proper precautions necessary. I highlighted my hair (which is considered the safest form of hair color while pregnant) and NOT to the root, so nothing ever touched my scalp. I also used products that did not contain any ammonia. It is also recommended to be in a well-ventilated area as well as being at least in your second trimester, and I followed both of those rules. Anyone who knows anything about me knows that I take caution in all the products I use all the time, but especially when pregnant," she said.

But the 32-year-old fashionista - who runs clothing boutique D-A-S-H with sisters Kim and Khloe - admits she doesn't know how to feel about her new look. "I still am not sure how I feel about the color. I would say dark probably suits me best, but a change is always fun! At this point, I don't want anything else on my hair besides sulfate free shampoo and conditioner. 😊 I decided to change up my hair to try something new. I haven't touched my hair color in over 10 years and thought it was time for some fun. Don't even ask ... why now after 10 years ... I'm just crazy," she wrote on her blog.