Jennifer Lopez Shows Off Chiseled Abs in 49th Birthday Bikini Pics

The singer is turning heads as she turns 49.

Jennifer Lopez Shows Off Killer Abs in Birthday Bikini Pics

Britney Spears Brings Andy Cohen On Stage -- and Seemingly Forgets His Name

ET's taking a look at a few of the big name celebs who have been picked from the crowd to participate in Britney's now-infamous 'Freakshow' number from her 'Piece of Me' show. 

Andy Cohen and 5 Other Stars Who Have Been Britney Spears' Onstage Plaything 

'The Four' Judges DJ Khaled & Meghan Trainor Send Demi Lovato 'Positive Love and Energy' (Exclusive)

Both artists, who have worked with Lovato in the past, offered sincere messages of love and support while speaking with ET at the season 2 finale of 'The Four,' which airs Aug. 2 on Fox.

DJ Khaled and Meghan Trainor React to Demi Lovato's Hospitalization After Drug Overdose (Exclusive)

Demi Lovato's Hospitalization: A Timeline of Her Recent Struggles

A source tells ET, "The more stressed out and more Demi was overworked, the more she wants to escape and do the drugs and not stay sober."  But were there signs of trouble?  Here is a timeline of Lovato's relapse.

A Timeline of Demi Lovato's History With Addiction

Josh Duhamel and Eiza Gonzalez Split: Source

Inside Demi Lovato's Struggle With Sobriety, In Her Own Words (Exclusive)

Demi Lovato was reportedly rushed to the hospital after suffering what appears to be a drug overdose on Tuesday.

Demi Lovato Hospitalized For Apparent Drug Overdose (Report)

Demi Lovato's Longtime Friends Nick and Joe Jonas Show Support After Her Overdose

The 25-year-old singer was hospitalized on Tuesday.

Demi Lovato Is 'Stable' Following Drug Overdose (Exclusive)

Inside the 'Brady Bunch' House: How the Iconic Property Remains a 'Living Shrine' to the Series (Exclusive)

ET got an exclusive look inside the beloved TV home.

See Inside the Iconic 'Brady Bunch' House!

Demi Lovato Was In 'Great Mood' at Concert 2 Days Before Overdose (Exclusive)

Demi Lovato's Rep Gives Health Update After Drug Overdose

Matt Lauer Calls Himself an 'Easy Mark' in First Interview Since Sexual Misconduct Scandal

Demi Lovato 'Awake and Responsive' Following Drug Overdose

Jesse Camp, Former MTV VJ, No Longer Missing After Police Investigated Possible Disappearance

The Riverside Police Department confirmed to ET that Jesse's sister, Marisha, reported him as missing on July 19.

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