Nicky Hilton posts first picture with newborn son

Thursday, Hilton took to Instagram

and shared an image of herself with her two-week-old son

Her son was laying on her chest

She captioned the image "baby bliss"

Hilton and James Rothschild announced the third addition to their family on Instagram on July 5.

Hilton and Rothschild have not disclosed their son's name or date of birth.

The couple have two daughters, Lily Grace Victoria and Theodora Marilyn

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