Stella, Queen of the Snow. The illustrations are lush, detailed and whimsical. Vivid colorful drawings of poetic Stella and her reluctant brother Sam. There are four books in the Stella series, and a few in the Sam series. All good. A perfect gift for 3rd or 4th birthday.
Olivia - First and favorite in the series of Olivia books, a slice of Olivia's daily life and her antics. I've heard Olivia described as "Eloise, but as a pig."
Cloudy With a Chance of Meatballs- Great to read to children of various ages, as each gets something different out of it. Food rains from the sky and the havoc begins. The illustrations are amazingly detailed and expand upon the story.