Glee's Dianna Agron is one of our favourite stars to look out for on the red carpet. As the years have gone by she's got more experimental and confident when it comes to fashion, but she maintains the same pretty, polished look that made her name.

She favours strapless silhouettes, feminine frills and bright, happy colours, and while she often looks to timeless designers like Carolina Herrera and J. Mendel to dress her for high profile events, we love it when she pulls something unusual out the bag, like her Giles dress for the Golden Globes.

Dianna has worked with stylists like Ashley Avignone to create her look, which often harks back to bygone eras (particularly the 50s and 60s) and is always age and event appropriate. Though she may not be particularly experimental when it comes to silhouettes, she will try any hairdo going, from cool braided updos to a sexy, choppy bob.

Click the image above to view a gallery of Dianna's style evolution.