Below are the best girly WordPress themes I could find. The themes are mobile device compatible, well supported and modest in their 'girlyness'. If you want extreme girly themes with flowers and sparkles, you might try here otherwise the themes I selected for this post are somewhat corporate and sophisticated. I've listed the page rank of the author's website as an indication of credibility.

Girly WordPress themes

1. Theme: Serendipity | Price/Purchase | Demo | Them author: http://themeforest.net/user/elemis PR4

   

2. Theme: Shepard | Price/Purchase | Demo | Them author: http://themeforest.net/user/cmsmasters PR4