12. Do I look all right in this? Yes, ___ fits you perfectly!

The correct answer is **B. its**. **Explanation:** 'It's' is a contraction of 'it is', and it is used to describe something that belongs to something (in this case how clothes fit). 'They' is used for plural nouns (and does not fit here) and 'it' can not function without the verb 'is', so only 'its' makes a correct sentence.