Thanks so much everyone! Really appreaciate all the input

I am non-Singaporean, but not intending to travel abroad now.
Well, after heeding your advice, so far I have been to:
- Maternity Exchange: I was quite disappointed to be honest. If you don't want to rent, everything looked really overpriced. And I didn't feel the shop had the wide range and vareity of brands that the website boasts about.
- Egg Maternity: Some good comfy styles. Shop may be small, but they've tried to cramp it full of vareity, so I didn't feel disappointed like I did with Maternity Exchange. But they're really low on stock for different sizes.
- Mothercare: Different outlets carry different clothes, some outlets don't even have a section for maternity clothes strictly limiting themselves with baby needs only.
- Marton Bell at Vivo: Some good maternity tops to be found. Also they're having a sale so doesn't pinch as much.
I'll definately take a look at the shops in Suntec/United as soon as I can spare the extra time and cash!!
Please do continue to suggest if you know of something new or unmentioned before.