1. Cate Blanchett is an acclaimed actress known for her performances in films such as "Blue Jasmine" and "Elizabeth."

2. I don't eat fast food often, but once in a blue moon, I'll treat myself to a burger and fries.

3. I don't usually go to the movies, but once in a blue moon, there's a film that I just have to see on the big screen.

4. I rarely take a day off work, but once in a blue moon, I'll take a mental health day to recharge my batteries.

5. I usually stick to a healthy diet, but once in a blue moon, I'll indulge in some ice cream or chocolate.

6. I'm not a big drinker, but once in a blue moon, I'll have a glass of wine or a cocktail with friends

7. In the dark blue sky you keep

8. My favorite restaurant is expensive, so I only eat there once in a blue moon as a special treat.

9. This was followed by a string of hit songs, including Blue Suede Shoes, Hound Dog and Heartbreak Hotel

10. Verified accounts on Twitter have a blue checkmark, indicating that they belong to public figures, celebrities, or notable organizations.