Lindsay Lohan says there's NO TRUTH to reports she was boozing at a SAG Awards after party this weekend ... and now, TMZ has learned, she's threatening to SUE the media outlets that published the story in the first place.

A source close to the actress tells TMZ ... Lindsay is already exploring her legal options with her attorneys ... because she feels the false stories are sabotaging her effort to save her career.

Lindsay acknowledges she WAS at the party at the Chateau Marmot hotel in Hollywood Sunday night ... but insists she was sitting with Alan Cummings the whole time and ONLY drank water.

We're told Lindsay's also pissed over reports about a recent gas station makeout session with Dennis Hopper's son Henry (pictured above), where she allegedly purchased Red Bull and vodka.

Sources close to LiLo tell us the actress is adamant the two are just friends ... NEVER MADE OUT ... and the only items she bought were soda, chips, and cigarettes.

The lord is my personal trainer, I shall not want.

Mega-televangelist Joel Osteen hit the beach in Hawaii this week for a little family vacation time with his wife Victoria, his son Jonathan, his daughter Alexandra ... and a SHREDDED SIX PACK!!!

Besides being one of the most famous preachers in the world, Osteen is also a health nut ... who dishes out diet advice on his web page. Judging by his sculpted physique, dude knows what he's talking about.

Justin Timberlake celebrated his 31st birthday this week -- and he's come a long way since his days on "The Mickey Mouse Club."

JT was one of many who hit it big after starring on the Disney show, coming from a crop that included Britney Spears, Christina Aguilera, JC Chasez, Keri Russell and even Ryan Gosling.

Check out how well has the rest of the MMC held up over the years!

Can you guess which metro-men have let down their guard and gotten themselves a little pampering on their hands and feet?!

There's nothing a fresh coat of paint can't take care of.

If you're like most people, you've already given up on your New Year's resolution to get healthy and work out more.

As you sit around and do nothing -- check out these pictures of stars breakin' a sweat!

Doesn't look fun, does it?

This gorgeous dirty-blonde babe is actually the daughter of one of Hollywood's BIGGEST names -- can you guess which star she calls "Dad?"

"American Idol" wannabe Angie Zeiderman loves Lady Gaga (as she proclaimed during her audition) but she's not trying to be like her ... she's just being herself.

Zeiderman tells TMZ she's theatrical by nature, and took it as a great compliment when Jennifer Lopez said most contestants couldn't sing a show tune like she did. Angie says she performs every Thursday night at a gay bar in Delray Beach, FL (the only girl who does so) and performs as part of a burlesque troupe that performs all over Miami.

If the "Idol" thing doesn't pan out, she should have no problem getting a gig ... as a Lady Gaga impersonator.