Rochelle Humes' son is the "easiest" baby she has had.

Rochelle Humes, Marvin Humes and their baby son (c) Instagram

Rochelle Humes, Marvin Humes and their baby son (c) Instagram

The Saturdays singer welcomed her newborn son into the world last week and she admits he has been a ray of sunshine and has "slotted right in to the chaos" of her daughters - Alaia-Mai, six, and Valentina, three.

She wrote: "One whole week of loving you ... My furry little bear ... What a week it’s been, today I actually woke up and felt a little bit more like me. The morning of this picture was the last time I put clothes on got dressed etc ... it’s mad how you lose track of days and hours in this little bubble. I wondered how different it would be going from 2 to 3 children but the truth is he is the easiest at the minute, he has come along and slotted right in to the chaos of the girls."

And Rochelle - who has three kids with husband Marvin Humes - admits she has found everything "a little overwhelming".

She added in the lengthy Instagram post: "For me it’s been remembering all the other stuff like which day I need to get the PE kits ready for and homework etc etc, that I have found a little overwhelming. You’ve just got to give yourself time to find your feet which I suppose is being made easier with all these new rules and staying home (not that I understand the rules lol) If you’re expecting a baby I’m thinking of you, it is a funny time to have one that’s for sure but when your little one arrives they are the only place your head is, they block out the craziness and the world seems magical again ... Lots of love xxx (sic)"