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Lily Allen, Sam Cooper

Beretta/Sims/Rex/Rex USA/BEImages

Lily Allen is a thing of the past.

The newlywed singer took to—where else?—her Twitter to reveal she's taken new hubby Sam Cooper's name and is now referring to herself as MrsLRCooper (Mrs. Lily Rose Cooper) since tying the knot on Saturday.

And although Allen made no reference to the name change, she did tweet some sweet messages about her big day to her 3 million followers...

"I had the most amazing wedding, thank you to everyone who went to such extraordinary efforts to make it that way," the singer tweeted yesterday.

The 26-year-old and Cooper were wed over the weekend at St. James the Great Church in Gloucestershire. Topping off the festivities, the 32-year-old Cooper announced that Allen is four months pregnant.

Happy news for the singer, who miscarried in November while six months pregnant. Sadly, she also lost a baby in 2008 when she was dating Chemical Brothers' Ed Simons.

Allen and Cooper are reportedly headed to Glastonbury later this month for their honeymoon, where they will sleep in a luxury teepee.

Congrats to the happy couple!