Gwen Stefani and Blake Shelton are busy planning their wedding, but if the couple gets its wish, the Gwen will be a pregnant bride!

After one year together, Life & Style has exclusively learned the pair is getting married and trying to have a baby.

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"It’s only a matter of time until they formally announce the engagement," a source reveals. "And while they’re planning the wedding, they’re actively trying to start a family. They’ve never been happier or more in love.”

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The blonde beauty, who is already mom to Kingston, 10, Zuma, 8, and two-year-old Apollo with ex Gavin Rossdale, has plans to undergo in vitro fertilization.

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"She has incredible doctors and she’s explored all her options, including surrogates,” says a source. “No matter what, Gwen wants the child to be hers and Blake’s baby together. She’s ready.”

For more on Gwen and Blake's upcoming nuptials, be sure to pick up the latest issue of Life & Style magazine, on newsstands now! In the meantime, check out the gallery below for more of their cutest moments!