The 28-year-old 'Bad Romance' hitmaker got engaged to actor Taylor Kinney on Valentine's Day after four years of dating.
Gaga plans to serve her guests food from her parents' Italian restaurant in New York City, Joanne Trattoria, and wants her relatives to take key roles in her big day, reported Us Weekly.
"She's just coming up with ideas now. She's asked her sister Natali to be the maid of honour, and her dad can't wait to walk her down the aisle. They want it to be a family celebration," a source said.
The singer, whose real name is Stefani Germanotta, released an album of duets, 'Cheek to Cheek,' with Tony last year and is said to have asked him to perform the title track at her reception.