Kim Kardashian gushes about her 3-month-old son Psalm, calls him 'the best baby' and the 'sweetest ever' (Photo)

Proud mother of four, Kim Kardashian has taken to Instagram to gush over her fourth child, Psalm West, who is just three-months-old.

The 38-year-old reality star shared this adorable photo of herself cradling her youngest son and called him 'the best baby' and the 'sweetest ever.'

She wrote in her caption: 'My little man is the sweetest ever! He’s honestly the best baby. Sleeps through the night and by far my most calm. How did I get so lucky.'

Kim Kardashian is also mother to North West, 6, Saint West, 3, and Chicago West, 1.