Recommended pregnancy underwear

Hi everyone, need your advice. First time mummy here. 😬 Can you recommend any pregnancy underwear in Singapore that can fit all body size? I’m currently pregnant but still have long way to go until delivery and not sure how many kg I will gain in the future. I’m eyeing on Chantelle underwear (1 size fit all) but the price abit expensive. Want to ask other recommendations. Thank you in advance!