The new mum, 44, gave birth to a boy in Miami, Florida on 5 March (16), but the singer admits she and boyfriend Gerardo Bazua have yet to settle on the tot's moniker.

Paulina also has five-year-old son, called Andrea Nicolas, from her marriage to Nicolas Vallejo, and he has been trying to convince mum to name his brother after his favourite superhero duo, according to his maternal grandmother, actress Susana Dosamantes.

She told Mexican TV show Hoy, "The most handsome man in the world is Nico and the second most handsome is the new baby. All we refer to him as 'el nuevo' (the new). Nico... now wants (the baby) to be called Robin because he says he's Batman."

Paulina, who divorced Nico's father in 2013 after eight years of marriage, shared a photo of her newborn's feet on Instagram over the weekend (02-03Apr16) and simply added the caption, "No words".

Proud dad Gerardo previously gushed about the baby, tweeting: "God has given my girlfriend and I his greatest gift, the blessing of making us parents again. Thank you God for all this love."

Paulina began dating singer Gerardo months after her divorce . They met when he auditioned as a contestant on the Mexican version of The Voice, on which she served as a mentor from 2012 to 2013.