New reports are claiming that A-list celebrity couple, Eva Mendes and Ryan Gosling, are going to have a baby boy, and he's going to be due this September.

Even though they have been very secretive about the pregnancy, and have not provided any specific details to the press, a source told OK! Magazine that the baby is a boy.

The source said that Mendes and Gosling have already finished up the nursery and painted it a neutral color. However, the room also has blue accents, which could indicate that they are preparing for a boy. The report also indicated that a couple of assistants have been seen coming in and out of Mendes' house with blue baby stuff.

On a side note, the couple has allegedly decided on a cute nickname for him, "little monkey."

The couple reportedly sought to stock their nursery with suitable accessories, and Gosling was the one who built the crib made out of bamboo. Meanwhile, Mendes added a rocking chair to complete the decorations.

An insider went on to tell OK! that Gosling is super excited that it's a boy, as he wants to teach him things like sports.

There is also arising speculation on why Mendes has not been seen since March. The last time she was photographed in public was when she went to her Spring campaign for the New York & Company.

During the event, it is believed that Mendes was already three months pregnant. She was wearing a floral outfit with a white bag that she might have used to hide an alleged baby bump.