Alec Baldwin's yoga instructor wife Hilaria Baldwin née Thomas, who's been teaching at Manhattan's Yoga Vida since 2005, is being sued by a 32-year-old Yale Ph.D. candidate and HuffPo blogger named Spencer Wolfe, who cites an overcrowded class, her' "negligence" and her request that students "perform a dangerous activity …

"Stay" is already a sad song, and Rihanna's moody tub-soaking video (plus, imagining that it's about Chris Brown) makes it seem even more tragic. But when what happens when Vin Diesel puts on a pair of ripped jeans, grabs a mic, stands in front of a blank wall and sings along to a projected image of the video? This is …

• Lindsay Lohan's friends and family want her to go to rehab but she's not having it. A source says her parents' public bickering would "drive even the most normal of people over the edge" and Linds is drinking to cope.

• Chris Brown tried to sit next to Mariah Carey during a private reception after Michael Jackson's memorial. She quickly informed him that she would rather he sit at another table. [Perez Hilton]

• Brad Pitt's mom was supposed to move into the Long Island estate where the posse is staying while Angelina Jolie films Salt, but Angelina has reportedly nixed the idea.

• David Duchovny, 48, has entered rehab for sex addiction. Here's his statement: "I have voluntarily entered a facility for the treatment of sex addiction. I ask for respect and privacy for my wife and children as we deal with this situation as a family." Duchovy has been married to Tea Leoni since 1997 and they have 2…