Christina Aguilera attended the press conference to promote the second series of the talent show “The Voice” in California. The 31-year-old singer went bra-less in a Thomas Wylde leopard print dress which she teamed with a dangled necklace drawing attention to her chest and a bright red lips. Also, it seems that Christina is gaining a lot of weight recently, but that doesn’t seem to bother her at all. The singer was joined by fellow coaches Adam Levine, Blake Shelton, and Cee Lo Green.