Perez Hilton — This is so cool! Demi Lovato was on The Tonight Show on Friday, and she spent some time with host Jimmy Fallon doing the Wheel of Musical Impressions — and what she came away with is AH-Mazing!!! Related: Get All Your Demi News HERE! The singer got... more info

Time — She also did Twinkle, Twinkle, Little Star as Fetty Wap more info

Perez Hilton — Last night Christina Aguilera and Will Ferrell stopped by the Tonight Show and performed a little sketch — the tight pants dance. Jimmy Fallon of course jumped in on the act as the three celebs danced and argued over who had the tightest pants. Don... more info

Perez Hilton — If you're a bird, I'm a bird!! Looks like El Niño gave Christina Aguilera the perfect opportunity for a Notebook moment with her fiancé Matthew Rutler. Related: Celebs Who Are MILFs! During El Lay's very rare torrential downpours this week, the ver... more info

Perez Hilton — We already know that Miley Cyrus bailed out on Linda Perry's concert on Tuesday celebrating the music from the film Freeheld… so let's focus on who was there! Turns out, it was a pretty poppin' party! Former pop star rivals Jessica Simpson and Chri... more info

TMZ — Former rival pop stars Jessica Simpson and Christina Aguilera had a chance to reignite their battle during an epic party ... but only one of 'em made it to the stage.  The singers, and their husbands, hit up Linda Perry's L.A.… more info

L.A. Times - Entertainment — SERIES Live From Lincoln Center The performing-arts series marks the 100th anniversary of singer Frank Sinatra's birth with a concert hosted by "Family Guy's" Seth MacFarlane and featuring performances by Sting, Christina Aguilera, trumpeter Chris Bo... more info

Perez Hilton — Sounds like someone had a little too much fun! Rumor has it Christina Aguilera was totally wasted at Seth MacFarlane's annual Christmas party on Sunday in Beverly Hills. Related: Blake Shelton Wants Gwen Stefani To Stay On The Voice In fact, she appa... more info

Perez Hilton — Christina Aguilera approves! On Thursday, the Grammy winner shared her feelings about Blake Shelton and Gwen Stefani's new relationship while at Verizon's HopeLine campaign event in El Lay. Let's just say she's totally onboard. SCORE! Related: Christ... more info

The Daily Mail — The 34-year-old star did her bit to raise awareness for a domestic violence cause on Thursday. more info