Best moment? Leona's most successful single Bleeding Love reached number 1 in over 30 countries around the world and was the best-selling single worldwide in 2008.
Where are they now? Leona has sold over 20 million records worldwide and is one of the most successful X Factor contestants ever. We remember when she was a shy contestant on the show - my, how she's grown!
- 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
- Biscuits: 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!