Yasin usually has a new one each week.
At the moment it's Olivia. He also loves Where the Wild Things Are, the Hairy McClary books, Maisy, Spot, Time for Bed, Where is the Green Sheep, Who Sank the Boat, the Mr McGee books, Ping, Hop on Pop, Let's Get a Pup, Queenie the Bantam.
he also loves the books with one word/picture to one page because he can 'read' them himself.

Imran love, love, loves Mr Brown Can Moo. He insists on having it read to him every night and that's enough. If I try to get down another book afterwards he cracks it rofl.

ETA - How could I forget the 'pillar book? lol.