Nicole Richie & Joel Madden Getting Married!  —  They've been together for more than three years and have two children.  Now, Nicole Richie and Joel Madden are planning to make it official.  —  Richie said Monday night during a taping of the Late Show with David Letterman that the couple …

Charlie Sheen's Wife in Rehab  —  In what could be a blow to the prosecution's case against Charlie Sheen, Brooke Mueller is now in rehab for substance abuse ... TMZ has confirmed.  —  The criminal case in Aspen comes down to Charlie's word against Brooke's — she claims he put a knife to her throat and threatened her life.

Betty White to SNL: Are You Kidding?  —  Between her cameo with Abe Vigoda in a Super Bowl commercial for Snickers, costarring with Sandra Bullock and Ryan Reynolds in the romantic comedy The Proposal, and being recognized for lifetime achievement by the Screen Actors Guild …

Bachelor's Ali “Shocked” by Rejection, Bachelorette Talk is “Nice”  —  America probably hasn't seen the last of Ali Fedotowsky.  —  Just a week after she left The Bachelor for professional reasons, the 25-year-old fan favorite appears on Tuesday's Ellen DeGeneres Show …

Chynna Phillips Enters Rehab for Anxiety  —  Chynna Phillips of the pop group Wilson Phillips checked herself into rehab for anxiety over the weekend, her manager, Lizzie Grubman, tells PEOPLE exclusively.  —  Phillips is the half-sister of Mackenzie Phillips, whose claims last fall …

Woman of the Hourglass  —  Mad Men's Christina Hendricks finds talk of her body boring.  A minority opinion, to be sure.  Particularly this season.  —  Corsets, lace, cleavage, and silk.  Who better than Hendricks to model the new lingerie-as-outerwear trend?

Megan Fox: I'd Make a Great Mother  —  Megan Fox says she has another role already in mind - that of a mother.  —  “No one believes me when I talk about this, but I'm really maternal,” Fox, 23, tells W magazine for its March issue, due on newsstands this week.

Oprah Says No Way to John Mayer  —  John Mayer's disastrous Playboy interview in which he dropped the N-word and told naughty bedroom secrets about Jessica Simpson is too much for even Oprah Winfrey to handle.  Oprah's couch — which has been a platform for dozens of celebrity apologies and explanations …

Couples Watch: Britney Spends Valentine's Day at McDonald's  —  • Britney Spears and beau Jason Trawick celebrated Valentine's Day with her boys, Preston and Jayden, but when the kids took their afternoon nap, the happy couple ran off together for a late lunch.  Their destination?

Damaged goods: Lohan not invited to much of Fashion Week … EDITORS' PICKS … BEST OF NYDN.COM

EXCLUSIVE: Porn Star Who Claims Tiger Got Her Pregnant Is Compulsive Liar Says Her Step-Mom  —  Deborah Siwik, the step-mother of porn star Joslyn James — the woman who claims that she was impregnated by Tiger Woods — has exclusively told RadarOnline.com that James is a “compulsive liar.”

Beyonce's Dad — This Might Be Your Baby Boy  —  TMZ has obtained a photo of the alleged love child of Mathew Knowles — aka Beyonce's dad — and while Knowles has yet to take a DNA test ... we kinda see a resemblance.  —  Alexsandra Wright — who claims she had an 18 month affair with Knowles …