I don't know if you can get the readymade child's sari here.You can try the shops in Meena Bazar and Karama Centre. Or ,you can buy the sari fabric that you get in the textile shops in Satwa and drape it like a sari.
Can anybody please tell me where the best place is to buy a child-sized sari.............just need it for a school costume so doesn't need to be too flash TIA :)