"(Aguilera) is definitely my stage name, I am still going by it professionally," she told Access Hollywood in an interview that airs Wednesday. "But 'Mrs. B' has been the cute thing that my friends like to call me."
As for the couple's honeymoon, the pop star said they had "an amazing time."
Aguilera and Bratman married in a ceremony that one observer described to PEOPLE as "simply spectacular" at the Staglin Family Vineyard in California's Napa Valley. The wedding, which is estimated to have cost $2 million, had everything from a chandelier crafted from 2,500 crystals to a five-tier chocolate cake topped by hundreds of sugar flowers.
But Christmas won't be all about the gifts. "I already have the most extravagant gift, and that is my husband," she said.