One of the things I love about Doctor Who / its costuming department is that the companions always tend to have certain items of clothing they go back to-

Martha had her red jacket

Rose had her pink hoodie

Amy had this whole bunch of stuff

Clara wears the same dress every now and again

Donna…er…okay, Donna is the odd one out. But it still amuses me that on the one show where they could have gotten away with their characters having unlimited wardrobes (because…the TARDIS has an unlimited wardrobe) they didn’t!