The 37-year-old supermodel - who already has three-year-old son George with long-term boyfriend Gregorio Marsiaj - gave birth to a baby boy, Philip, on 27.03.11 at London`s Portland Hospital and both mother and son are doing well.
No further information has been released.
Eva announced her second pregnancy last October and said the whole family were looking forward to welcoming their new arrival.
She said: "Gregorio and I are thrilled with the wonderful news. Our son George is being really sweet, asking all different questions about the baby and talking to my belly."
Eva also revealed she was keen to have a natural birth and couldn-t understand why some celebrities opt to have their babies via an elective Caesarean.
She said: "I wanted to give birth naturally at nine months.
"I`ve heard some women book delivery by Caesarean early before their due date. I think a lot do it because of the fear of pain."
The Czech-born beauty - who was once married to Bon Jovi drummer Tico Torres - has previously spoken her motherhood had changed her life and said it was something every woman must do.
She said: "I`m totally in love. I believe motherhood is necessary for a woman, it is her function."