Sideshow: LiLo, ending rehab, tweets wisdom

Teen starlet turned public menace

Lindsay Lohan

, 24, is scheduled to be released from rehab Monday. LiLo's court-ordered sojourn followed a brief stay in jail. But don't fear, LiLo has her act together, as she demonstrates in this inspirational tweet.

"Today is the first day of the rest of my life," she says, before adding this rockin' quote: " 'The future depends on what we do in the present.' - Mahatma Gandhi . . . One step at a time."

Shania Twain

finally has washed that dog of an ex-husband,

Robert John "Mutt" Lange

, out of her hair.

Twain, 45, whose marriage collapsed in '08 when Mutt left her for her then-best friend, Marie-Anne Thiébaud, has married Marie-Anne's ex-husband, chocolate king Frédéric Thiébaud. The Canadian country-popster and the 40-year-old Nestlé suit exchanged vows at sunset on New Year's Day in Rincon, Puerto Rico, before 40 family and friends.

Perez Hilton says the guests capped the ceremony by singing "All You Need Is Love" en masse.

Shania and Frédéric hooked up in '09 while "finding solace with each other after their spouses allegedly had an affair," says People.

Valerie Bertinelli

also said her I Do's on Saturday, marrying beau of seven years, financial planner

Tom Vitale

, 49, says People.

"We're so happy," says Bertinelli, 50, star of the 1970s cautionary tale, One Day at a Time. The wedding, at the couple's Malibu, Calif., home, drew 100 guests, including Val's ex-, Eddie Van Halen, whom she divorced in '05 after nearly 25 years, and their son, Wolfie, 19.

The Hollywood Reporter says

John Mellencamp

has split up with his third wife,

Elaine Irwin Mellencamp

, after 18 years. The couple have two teenage sons,

Hud

and

Speck

.

Lady Gaga

says she'll release a new single, "Born This Way," on Feb. 13. Her next album, also titled

Born This Way

, will be out on May 23. The single tackles a theological issue dear to

St. Augustine

. (Or was it

Deepak Chopra

?) "I'm beautiful in my way, 'cause God makes no mistakes. . . . Don't hide yourself in regret, just love yourself and you're set."

Far out!

Guitar legend

Chuck Berry

, 84, had to cut short a concert Saturday night in Chicago because of "exhaustion," his rep tells the New York Daily News. Berry had performed two shows Friday in New York.

Hungary's National Media and Infocommunications Authority is investigating a radio station for broadcasting two songs by

Ice-T

- "Warning" and "It's On" - because they may have "adverse effect on the moral development" of children under 16. Authorities say the tunes should not have aired before 9 p.m. to avoid exposing kids to Ice-T's NC-17 rhymes.

Little Fockers

, the artwork born of

Robert De Niro

and

Ben Stiller

's love, made $26.3 mil over the weekend to win the box office wars.

True Grit

, the

Coen brothers

' post-revisionary, post-post-ironic, neo-earnest western homage starring

Jeff Bridges

and

Matt Damon

, is at No. 2 with $24.5 mil, according to studio estimates. And Bridges' sci-fi remake,

Tron: Legacy

, is at No. 3 with $18.3 mil.