Demi Lovato took to Twitter to congratulate her dear friend Kim Kardashian on the birth of her baby.

"So excited to share my new eBook with you," Demi Lovato wrote on Twitter the day her eBook was released on June 11.

Demi Lovato was seen hanging out with an flame - Wilmer Valderrama. Demi Lovato was seen hanging out with an old flame - Wilmer Valderrama. The X Factor judge was spotted shopping for furniture at Urban Home in California on June 7 along with the actor, who is 13 years her senior, according to PerezHilton.

Demi Lovato, who has a history of struggling with an eating disorder, revealed one of her biggest wishes via Twitter. She wants a Barbie doll made with her real proportions -- and cellulite!