Yes, new clothes at Whitsuntide, here in West Yorkshire. New dress, Clarks sandals and white ankle socks. I don't remember wearing a hat - pity, because I love a hat!
If I remember correctly , I was taken to visit my grandparents and various elderly aunts on Whit Sunday to show off my new clothes, and I think I was given a sixpence as a treat!
We didn't have a lot of spare money, but Mum made sure I was always 'nicely' dressed. She often made my dresses and skirts, and always knitted us ( Mum, Dad and me) a new cardigan or jumper for our summer holiday.
I don't remember new clothes as such at Christmas. What I do remember is her insisting that I was washed and dressed before starting reading my new books on Christmas morning! No lounging about in PJs until lunchtime for me!