a birthday surprise

My sister and I went to the bakery just now. We told the chef to make a pudding cake and send it to our house next Wednesday. Next Wednesday is my mum's big day, it's her BIRTHDAY!!!!We are keeping it as a secret from her. Neither my sister nor I will tell our mum because we don't want to spoil the surprise. Hope my mum will love the cake we bought for her.

UPDATE:
My mum was happy even though not surprised enough. She smelt something stinks and said I was suspicious. I guess i was terrible at hiding something. Anyway, the cake was superlicious. My mum and I had finished half of the cake in just 30 minutes. Oopsy...getting fatter =(