Nick Cannon has had quite the week. After falling ill due to minor kidney failure, the radio host, rapper, father and hubby to Mariah Carey tweeted that he underwent surgery at a hospital in Los Angeles. Of course, we're sending well wishes and healthy vibes to Nick and his family as he's on the mend!

Elsewhere on Twitter this week, Ludacris announced he'll be opening a restaurant called Chicken & Beer in the Grand Concourse terminal in the Hartsfield-Jackson Atlanta International Airport. Hmm...wonder what they'll be serving?

Simon Cowell sent well wishes via Twitter  to the family of Kerry McGregor, a finalist on the U.K.'s version of 'X Factor,' as she lost her battle with bladder cancer this week. The Scottish born-singer leaves behind a son, Joshua, just seven years-old. May she rest in peace.