Baby clothes in the mall are so expensive. Where can I buy cute, quirky, and CHEAP onesies in Manila?

I also buy baby stuff online and they are indeed cheaper compared to the mall price. You can join Mommy-baby groups and make sure to have a legit check before doing any transaction to avoid being scammed. There are also Pasa-buy groups on Facebook where you can register and get a really low price for branded items like Old Navy, Gap, Carter's, etc.