Tamara Ecclestone bought her daughter a dog for her first birthday

Tamara said: "We got her a Cavalier King Charles spaniel called Lady, and a Build-a-Bear [teddy bear] which Jay and I recorded our voices in so she can keep it forever."

Sophia's birthday was marked with a lavish princess-themed party, which also boasted a petting zoo of animals including a baby zebra, and Tamara began planning the bash the day her baby was born.

She admitted: "In my head, I've been planning this party since the day she was born. From January the plans were official. One is such an incredible milestone ...

"Sophia's party was always going to have a pink princess theme."

Despite the little girl's age, Tamara is convinced she will remember the party forever.

She added: "I just think it's nice for a girl to have a memory of a fairy princess party.

"Sophia woke up in a really good mood this morning. I think she realises something is going on because there are lots of people."

The 30-year-old heiress commissioned a 4ft castle cake for Sophia because it was similar to one she had as a girl.

She added to HELLO! magazine: "I had a very similar fairytale castle cake when I was younger, so I knew I wanted it for Sophia.

"I go crazy for all the celebrations - I love Christmas and birthdays - but now Sophia is here, celebrating is all the more amazing because really it is all about children. I'm so happy to be doing this for her."