Yep, this is definitely correct.i am not sure but i think you need to train in them
maybe start with a lover number in heels
i just started the game so it's why i am not sure
At first you can only wear very short heels (~1-2cm) ... but later, with increaseing Heels-Skill, you can buy higher and higheer Heels.
Aside from the 2 very short heels you can buy in the clothes store in the mall (which should be your first heels), there also are the little higher heels in the Office-Store (Anderson Building), which should be he 2nd step after getting a little bit of experience with wearing heels