Wedding Countdown! Britney Spears officially wrapped up her Las Vegas residency “Piece of Me” on December 31, and now RadarOnline.com has learned exclusively she's finally ready to take the next steps and tie the knot with 23-year-old boytoy Sam Asghari!

The duo are said to already be "quietly engaged" and are now planning to exchange vows in secret ceremony in the new year.

"They want something intimate and classy, around Valentine’s Day," a source reveals exclusively to Radar, however — "provided her schedule permits it!"

she's also anxious to start a family! As Radar previously reported exclusively, a close friend of the pop princess revealed: "All she can talk about right now is having a baby. She wants a girl so bad and she’s madly in love with Sam — and vise versa!”

So bad, in fact, that the mother of Sean Preston, 11, and Jayden James, 12, has started “taking prenatal vitamins to prepare for pregnancy,” the source dished to Radar.

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