Read what she wrote below:
"My dearest baby,
You gave the strength i didn't know i had. You taught me the true meaning of serenity and peace. I can't wait to meet you. I can't wait for you to join the palyer's box next year. But most importantly, i am so happy to share being number one in the world with you...once again today. On @alexisohanian bday. from the world's oldest number one to the world's youngest number - Your mummy"