Snap-arazzi: Best celeb Snapchats of the week (12/9 - 12/15)
Kylie Jenner reprised her 'Dirrty' Christina Aguilera look for Xtina's own birthday party
Social Scene: Week of December 12
Kylie Jenner gets 'Dirrty' in Christina Aguilera Halloween costume
15-year-old slays Christina Aguilera song in viral 'X Factor' audition
Remember when Madonna, Britney and Christina kissed during the 2003 MTV VMAs?
Red carpet rewind: MTV Video Music Awards 2001
Christina Aguilera releases 'Change', pledges proceeds to Orlando shooting victims
Christina Aguilera, Demi Lovato, Blake Shelton and more stars react to Christina Grimmie's death
Christina Aguilera channels Jessica Rabbit with new red hair, performs 'Ain't No Other Man' on song's 10th anniversary!
Christina Aguilera mocks Adam Levine and Blake Shelton after her 'Voice' win: See the funny video!
'The Voice' coaches showdown: Who has the highest net worth?
Christina Aguilera and Ariana Grande to duet on 'The Voice'
'The Voice' scraps Whitney Houston hologram performance with Christina Aguilera (Video)
EXCLUSIVE: 'The Voice' plans Christina Aguilera duet with Whitney Houston hologram
'The Voice' reveals top 9
Christina Aguilera divulges singing tips and career lessons in her new MasterClass: Exclusive
Michelle Obama visits 'The Voice,' proves she's a huge Blake Shelton fan
EXCLUSIVE: Adam Levine responds to rumors he's leaving 'The Voice' and reveals what's 'in the Incubator' for Maroon 5
Christina Aguilera rocks earrings with a very special meaning
'Voice' judge shakeup: Miley Cyrus and Alicia Keys to join, Pharrell Williams to exit (exclusive)
'The Voice' recap: Blake Shelton goes up against Christina Aguilera on third night of blind auditions
Christina Aguilera kisses a female 'Voice' contestant on the lips and Pharrell loses his mind
'The Voice': 'Curly Sue' star Alisan Porter's flawless audition brings Christina Aguilera to tears
Curly Sue star makes a comeback on 'The Voice'
Watch Demi Lovato nail impersonations of Christina Aguilera, Fetty Wap on 'Tonight Show'
Christina Aguilera surprises Hayden Panettiere on 'Lip Sync Battle'
Miley Cyrus set to join Season 10 of 'The Voice'
Christina Aguilera is in no hurry to get married: We snuggle, have 'casual conversations' about it
Blake Shelton makes Gwen Stefani blush over 'Booty Call' remark on 'The Voice'