The 'Pokerface' hitmaker's boyfriend Taylor Kinney and friends are putting on a Mad Hatter-style tea party to toast her 27th birthday, reported Sun online.
"Gaga's always been obsessed with taking tea and tea sets on tour to keep her happy, so they are putting a smile on her face with this Alice In Wonderland-themed do.
"She's still on painkillers after the operation on her hip so she shouldn't be drinking any alcohol, which also makes it a good idea," a source said.
"She's been collecting the antique blue and green glass containers after creating her Fame perfume, as she loves the morbid look of the skull and crossbones logo on the bottles," the source added.