how would you say these
1. a shirt with short sleeves and long sleeves
---how would say them? short sleeve shirt and long sleeve shirts?

2. short pants and long pants
---how would you say them?

3. A: what kind of shirt would you like? Short sleeves or long sleeves
B: I'd like short sleeves.
--- is this dialogue natural?

Thank you!

Question

how would you say these
1. a shirt with short sleeves and long sleeves
---how would say them? short sleeve shirt and long sleeve shirts?

2. short pants and long pants
---how would you say them?

3. A: what kind of shirt would you like? Short sleeves or long sleeves
    B: I'd like short sleeves.
---  is this dialogue natural?

Thank you!

Answer

1. short-sleeved shirt; long-sleeved shirt
2. In Australia we say 'shorts' for trousers (what Americans call pants) that stop above the knee.  Trousers, by definition, are long. 
3.  yes it sounds fine.

Answer

1 and 3 are correct

2. In the US we use shorts for shorts pants and pants for long pants