Demi Lovato sure has grown up into a beautiful young woman, inside and out.
On Monday, the Disney star turned X Factor judge celebrates her 20th birthday. Kim Kardashian posted an adorable Instagram photo of the two brunette beauties blowing kisses at the cam. "Happy 20th Birthday DemDem!!!! I love you @ddlovato," the E! reality star wrote.
Another ex-Disney star, Miley Cyrus, tweeted her well wishes for Demi."@ddlovato happy birthday beautiful," she wrote. "I'm sending you lots if x's not wasting time on o's =] have the best day everrrr xxxx"