Olana is 6 years old and 48 inches tall, she is wearing the Polina's Apron Dress and Lucia's Oversized Blouse from Little Creative Factory in size 6Y. 

Theo is 3 years old and 38.5 inches tall, he is wearing the poudre organic Marco shirt in cassonade, size 3Y, and Gray Label's baggy pants in size 2-3Y.