Zac Efron has proposed to Vanessa Hudgens to please her mother.

The “High School Musical” actor reportedly popped the question to his girlfriend of three years because her mom Gina Hudgens doesn’t approve of the couple living together out of wedlock.

A source said: “Zac is relieved to be out of the pressure cooker, because Vanessa’s mother has been putting serious heat on him to make an honest woman out of her daughter.”

“She is old-school and doesn’t approve of Vanessa living with Zac without some type of wedding promise.”

Zac, 21, is believed to have asked 20-year-old Vanessa to marry him while they holidayed in Japan in January.

The couple spend most of their time living in Vanessa’s six-bedroom Tuscan style mansion in Studio City, California – despite Zac spending $2.3million on his own modern, two-bedroom house in the Hollywood Hills last December.

The source added to National Enquirer magazine: “Zac loves the current arrangement. He adores Vanessa and they gel really well together.”

“Gina already considers Zac a part of the family. So she’s happy that he proposed.”

It has been reported the couple – who met on the set of “High School Musical” – hope to tie the knot sometime next year.

Gwen Stefani says she wants more children — but not while she’s on tour and not until she’s done another No Doubt record. Her 1-year-old son, Kingston, has been traveling with the 37-year-old singer on her “The Sweet Escape” tour.

“I go from the tour bus to the hotel room to the concert venue — all while carrying my baby,” Stefani tells InStyle in its September issue, on newsstands Friday.

“He’s just getting into music. He does the whole head-bouncing thing,” she says. “I love him so much. He’s the best thing that has ever happened to me.”

Kingston is the first child for Stefani and her rocker husband, Gavin Rossdale, 39, who were married in 2002.

“Obviously I’m in a race to have another, but I don’t want to do it while on tour,” Stefani says. “And I want to do another No Doubt record.”

“But I can’t wait to get pregnant again,” she tells the magazine. “It’s so fun and consuming and romantic.”

Stefani became a staple in the music world with the 1995 release of No Doubt’s “Tragic Kingdom” record. British-born Rossdale, who fronted Bush, made his American debut with the more sober album “Sixteen Stone.”