Gwen Stefani has one of the most uncannily unique styles in Hollywood.

Between her duties as a recording artist, fashion designer, and mom, we're not sure how she does it, but Gwen always manages to look pulled together and insanely stylish.

In honor of the former No Doubt star's 44th birthday today, we're taking a look back at some of her most memorable looks over the years.

Click through the gallery to see some of Gwen's most iconic style moments!