The singer turned up to judge The Voice with dip-dyed black and purple tips, returning to her edgier 'Hollaback Girl' style.
Matched with retro sunglasses, Gwen swept her locks to one side for the full punk-rocker effect. We're seriously getting noughties nostalgia right now.
- Biscuits: The best and worst revealed
- Healthy juice recipes: Detox juices you can make at home
- Yogurts: best and worst for your diet revealed!
- Best bob hairstyles
- Breads: Best and worst loaves revealed
- Cereal bars: the best and worst revealed
- How to have a healthy takeaway: The best and worst options on the menu
- Tested: Best and worst sun creams
- What celebrities really eat in a day - revealed!