New York, Feb 15 : New mum Christina Aguilera has given the world the first look at her one-month-old son Max, by posing in a series of photos for a US magazine.

The 'Dirrty' singer appears on the cover of People magazine with her son, her first child with husband Jordan Bratman.

Talking about her little one to the mag, Aguilera said that she is "head over heels in love" with her baby.

"When [Max is] breast feeding, I just sit there and stare at him. I'm in awe of this little miracle," the New York Post quoted her, as telling the mag.

She also revealed that she nicknamed the baby Yolky before he was born because her doctor said he looked like a little egg yolk in his sonogram picture.

"Now he's the Baby Formerly Known as Yolky," she joked.

The 27-year-old gave birth to Max on Jan. 12 in Los Angeles.

ANI