WATCH: Primo tells his dad Drew Arellano about his and mom Iya Villania's secret

Iya Villania and her eldest son, Primo, showed how they kept the baby secret from Drew Arellano in a new vlog posted on January 3.

In their YouTube channel Life with The Arellanos, Iya shared how she kept her pregnancy from her husband with the help of her son Primo The proud mom said, "So how long has been Primo keeping the secret? Siguro it's probably around almost a week. So, we've kept a secret for a week, love."

Photo source: YouTube: Life with the Arellanos

Iya asked Primo, "Have you told anyone, love?" and her son confidently answered, "no."

The Kapuso mom expressed how proud she is of her son who can now keep a secret.

"Aw, this boy can keep secrets na!" She said.

When asked what's their secret, Primo whispered, "Mama will have a baby."

Iya and Primo told Drew about the TV host's pregnancy during their fun family camping day at Tanay. Primo finally told his father, "Mama has a baby, but it's only very very tiny!"

He added smiling, "It will grow!"

Watch their fun adventure and family announcement in this vlog

Meanwhile, see the sweetest photos of Iya and Drew through the years in this gallery: