Signs on to Judge ‘X Factor’  —  Demi Lovato has officially signed her deal and will be a judge on the next season of “The X Factor” ... TMZ has learned.  —  According to our sources, Demi will be in NYC tomorrow for the FOX Up Fronts to announce her joining the show.

Tyson Beckford — Sex Tape Being Shopped  —  Sex Tape Being Shopped  —  EXCLUSIVE  —  A sex tape which is said to feature male supermodel Tyson Beckford is being shopped around the adult entertainment community ... TMZ has learned.  —  Sources tell us ... the seller insists …

Rosie Pope of Pregnant in Heels Gives Birth on Mother's Day!  —  Rosie Pope got the ultimate Mother's Day gift.  —  Bravo's Pregnant in Heels host - and mom to two boys - gave birth to her first daughter on Sunday.  —  Weighing 7 lbs. and 9 oz., the baby is “healthy and beautiful,” Pope and hubby Daron say in a statement.

Chris Hemsworth's Wife Elsa Pataky Gives Birth to Daughter India!  »  —  Chris Hemsworth may be on the brink of international superstardom with roles in The Avengers and Snow White and the Huntsman, but he's got an even bigger, more exciting project lined up now: the role of a proud, first-time dad.

Sarah Hyland Reveals She Had a Kidney Transplant  —  Sarah Hyland is young, beautiful and on a hit TV show - but the Modern Family actress has been quietly battling a serious illness.  —  Hyland, 21, has had a lifelong battle with kidney dysplasia and underwent a kidney transplant on April 13 …

Inside Sofia Vergara and Nick Loeb's Split  —  From the outside, Sofia Vergara and boyfriend Nick Loeb - who have reportedly split - seemed to be in it for the long haul.  —  The vivacious Modern Family star remained a constant by Loeb's hospital bedside as he recovered from a serious car accident in Aug. 2010.

Lady Gaga — NOT Engaged  —  NOT Engaged  —  EXCLUSIVE  —  Despite a photo that seems to say to the contrary ... Lady Gaga is NOT engaged ... sources close to the singer tell TMZ.  —  Famed photog and close friend Terry Richardson posted a photo last night of Gaga sporting a huge rock with the caption …

Kate Hudson And Sarah Jessica Parker To Recur On ‘Glee’ Next Season  —  Kate Hudson will do an extensive six-episode arc on Fox's Glee next season, Fox entertainment president Kevin Reilly announced during the network's conference call this morning.  Also signed for multi-episode arc on the show in the fall is Sarah Jessica Parker.

Halle Berry: My Mother's Day Is Cloaked in Mystery  —  What's Halle Berry doing for Mother's Day?  She has no idea.  —  “They're in cahoots!”  Berry told PEOPLE on Saturday of the scheming by daughter Nahla, 4, and fiancé Olivier Martinez.  “She and Olivier have big plans for me, I hear, but it's a secret.”