Expat Mum (São Paulo)

Hi,
I am looking to meet ex-pat mums, join mum & baby groups and especially share experiences of being a mum in São Paulo. I am British and have a 5 month old daughter who was born here in Brazil. Daddy is Brazilian and we live in Vila Olimpia.
I´ve done various searches online for groups, particularly of English speakers as I would like my daughter to be exposed to more English speakers, but I haven´t had much success so far.
If there is anyone out there who´d like to meet up or can suggest anywhere to meet people in a similar situation, please let me know!
Thanks
Aimee