AceShowbiz -

Is Gwen Stefani is going to be a mother of five soon? The No Doubt frontwoman is allegedly expecting twins with Blake Shelton and wants to ask Beyonce Knowles for advice since the "Partition" hitmaker recently gave birth to twins.

"Word is they run in [Gwen's] family, on her dad's side," an insider tells OK! "And friends are saying she's been talking constantly about Beyonce‘s pregnancy and wanting to reach out to her for advice. People are starting to put two and two together."

It is said that Gwen told Blake about her pregnancy on his 41st birthday last month. "He said it was the best birthday ever," the insider shares. "There were lots of hugs and happy tears, and they talked about baby names all night."

The insider further reveals that the couple is planning to get married in a "small, intimate" ceremony before the end of summer. "They are head over heels in love," the insider shares. "Gwen and Blake were desperate to start a family together, and they think tying the knot would be the perfect way to celebrate."

The "Hollaback Girl" singer is "dying to see [Blake] with little babies" and wants the country crooner to father her three sons. "Gwen and Blake really feel fate brought them together and continues to bless them with this promise of more kids. They say they have to pinch each other to make sure it's real," the source says. "Blake has put on stepdad shoes with relish. He is crazy for Gwen's boys, especially Apollo, who idolizes the giant man who makes his mom laugh."