From Christina Aguilera to Diana Ross, check out stars' best and worst looks, side by side. It's a perfect reminder that we all, even celebrities, have good and bad beauty days. more info

Pop Matters — Christina Aguilera singing over Britney's Blackout? Kind of, but Lady GaGa is also a lot more fun than either of them at this dance stuff anyways. more info

PopSugar — Nicole Richie looked dressed for Summer as she enjoyed the LA weather while Joel flipped up the brim of his hat '90s style this weekend. On Saturday, the couple brought Harlow over to Christina Aguilera's Where the Wild Things Are birthday party for ... more info

ContactMusic — CHRISTINA AGUILERA threw a star-studded birthday party for her son MAX - basing the event on classic children's tale WHERE THE WILD THINGS ARE. The singer and her ... more info

MTV.com News — Blues historian says 'At Last' will honor Obama family and Etta James.By Jocelyn Vena Beyonce Earlier today, Beyoncé announced that she would be performing the Etta James classic, "At Last," for Barack and Michelle Obama's first dance on i... more info

MTV.com News — Classic song is connected with 'Cadillac Records,' which B recently starred in.By MTV News staff Beyoncé Photo: Gabriel Bouys/Getty Images Beyoncé Knowles has disclosed the song she'll be singing for Barack and Michelle Obama's first dan... more info

Undercover, Australia — Christina Aguilera has surprised fans by popping up on Deal Or No Deal in of all places Turkey. more info

MTV.com News — Scare some stations might not play the third Circus single, due to its not-so-subtle profanity.By Gil Kaufman Britney Spears Photo: Bryan Bedder/ Getty Images Profanity in pop songs is old news. Hell, the chorus to Christina Aguilera's rec... more info

ContactMusic — CHRISTINA AGUILERA is set to design a line of clothes for a top British fashion store, according to reports. The Keeps Getting' Better hitmaker is in talks with the owner ... more info

MTV.com News — Even Paula Abdul could put out an album this year!By Gil Kaufman Eminem Photo: Kevin Mazur/ WireImage After another year that saw a serious decline in record sales, the music industry is, once again, hoping that 2009 will be the one that t... more info