Miley Cyrus has been keeping a big secret!

Just a few months after the singer reconciled with former fiancé, Liam Hemsworth, Life & Style has exclusively learned that she's pregnant with their first child.

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“It is very early on, but Miley has announced to a select group of friends that she’s expecting," an insider reveals. "She’s been feeling nauseous all the time and knew deep down that she might be pregnant."

miley cyrus liam hemsworth splash

Miley masked her midsection last month with a baggy sweatshirt.

The 23-year-old, who's been wearing her engagement ring from the actor since January, is now scrambling to make sure the duo walk down the aisle before the baby's birth.

"Miley is quickly planning a summer wedding so that she’s not too far along in her pregnancy when they say ‘I do,’” the source adds.

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But don't expect the couple to settle for an intimate ceremony. With a 300-person guest list, the pair's Australian nuptials will have a cowboy carnival theme.

Scroll through the gallery below for a look at Miley and Liam's cutest moments!