Dr Suess
Beatrix Potter stories too (Peter Rabbit and lots of other animals - Enligh classics)
Mr Men and Little Miss
I know that there's one that DD loved for years, and I can never remember the name but it's pretty famous here, it starts "Once there was a boy, and one day, a penguin came to the door. The boy thought the penguin was lost, and wanted to help..." (Yes, I almost know it by heart !!)
Once she started to get into longer books, Roald Dahls have been the BIG hit. Charlie and the chocolate factory, Matilda, and DH is just finishing Danyy the Champion of the World.
We always have "The night before Christmas" on Christmas Eve, and she also loves a french book about 24 mice preparing every day in December for Christmas and their daily adventures (I have to read it in french and then translate to english).
The hungry caterpillar was also a huge hit.
Dorling Kingsley also have little board books that are about ABC, Colour, Opposites, Words, Numbers and Time (possibly a few more too) - you can get them individually or in little libraries of 3, and we have 2 libraries. She still likes those, as she can now read the words herself, but the colours and pictures were great when she was smaller to read herself or read with us (great when she was learning to talk too).
We have so many books that favourites are difficult, but there's a few of the most loved.