Ally is wearing a Victoria’s Secret top similar to this one.

Camila is wearing this Brandy Melville top which is currently sold out.

I think Dinah’s shirt is Hollister but I’m not sure. 

Lauren is wearing this Beyonce shirt which is available in black online.

Normani is wearing this Beyonce tour shirtwhich is available on tour and online. Her leggings are from Topshop, but they are no longer available online.