As it stands, I don't love the romper look outside the elementary school context. However, seeing as it's currently quite trendy, let's move along. Assuming you are too old for pig tails but want to embrace this trend, the only advice I have for you is please, for the love of God, make sure it is a well-fitting romper.
As you'll note with this Unidentified Fashion Disaster, there's not much worse than a too tight romper. And we all know that camel toe is only acceptable on a certain 50-year-old high-kicker known as Sally O'Malley.