1 18 kg can wear 150 Barbie pants. According to the relevant information, 1 18kg can wear L code 10- 120kg, and 150 is XL code, so it can be worn. Barbie's pants are too small, so they will be particularly uncomfortable to wear. If you are particularly heavy, don't wear Barbie pants. Barbie pants have the function of shaping and lifting hips. People who are too fat will expose their figure and be uncomfortable to wear.