Nicky Hilton announces birth of 'sweet' baby boy with husband James Rothschild 

Nicky Hilton has given birth to her third child. 

The 38-year-old heiress and husband James Rothschild welcomed a baby boy to their family but haven’t yet shared his name or exact date of birth. 

The couple already have two daughters; Theodora Marilyn, 4, and Lily-Grace Victoria, 5.

Fashion designer Nicky announced the new arrival on Instagram on Tuesday, writing: ‘We are officially a party of 5! Welcome to the world sweet boy. Mom, dad and big sisters could not be more smitten.’    

Baby joy: Nicky Hilton announced the birth of her third child – a baby boy – on Instagram on Tuesday