One general rule is that anyone can wear pearls. Pearls look good on anyone as its all about how you wear them. If you are looking for a 'classier' style, you may want to wear a single pearl strand. If you want a more 'rebellious' look, choose a pearl style with more gold accents and layer with other bold pieces of jewelry you already own. Make sure you think about the pieces you have that will complement each other nicely.
It is also important to remember that pearls can fit with modern trends. For example, one may believe the dark leather trend may contrast the innocence of a white pearl but ultimately, these two styles balance each other perfectly.
Lastly, remember your style is your own. It is up to you what you think looks best. At the end of the day, you are the one wearing the pearls so wear them as you like best.