Pop star Jennifer Lopez, who recently turned 45, received a sweet birthday message on Twitter from her ex-boyfriend Casper Smart.

JLo's birthday was July 24. Smart, who split from the singer a few months ago, wished Lopez on the social networking site calling her a "beautiful little bear", reports contactmusic.com.

He posted a picture of a pink bear cake, which he had given Lopez for her 43rd birthday, and captioned it as: "Happppppppy Birthday to the most Beautiful lil bear in the world!!!! May all your wishes come true!! @JLo (sic)."

Lopez is yet to respond to the heartfelt comment.