Christina Aguilera is at it again! For the second week in a row, she left her big, red coache's chair to hit the stage for a performance on The Voice.

This week, she was joined by fellow mentor Blake Shelton to perform their song Just a Fool from Xtina's new album Lotus, which debuted last Tuesday. Unlike her faster tracks like Your Body, the first single, this song is a powerful ballad that the duo performed with simple stage-setting and great emotion.

You might want to grab some tissues for this one.

Katy Perry shared the stage with 11-year-old autistic girl Jodi for Comedy Central’s Night of Too Many Stars: America Comes Together for Autism Programs. Their rendition of Firework gives me chills every, single time.

Chelsea Briggs shows you the moving clip in today’s Hollywire Hot Minute!

We're not even a week in, and already Miley Cyrus has quite the busy 2012 in store for herself. 

Besides the release of Lol and So Undercover, Miss Miley has just been announced as one of the hosts of MTV's revamped version of Punk'd AND has a new tune on the horizon (win!).  Our Katie Krause is breaking it down in today's Hollywire Hot Minute!