Jumping on the Angelina leg Internet meme trend, Jennifer Lopez did a little Jolieing and flashed her gorgeous right leg backstage at  an "American Idol" party in L.A. on Thursday.

An Oscar presenter can't live on alleged nip slips alone.

It was a mini French revolution when Best Actor Oscar winner Jean Dujardin arrived back home in Paris to a chaotic mob of fans, cameras and police at Charles de Gaulle Airport on Tuesday.

The 39-year-old "The Artist" star got a hero's welcome and made his way through the pandemonium with his Academy Award in hand.

Imagine how much crazier it would have been if Uggie were with him.

Jennifer Lopez couldn't contain her laughter when she learned about the drama surrounding her maybe/maybe not nipple moment at the Oscars last night ... this according to her personal stylist.

TMZ spoke with Rob Zangardi ... who personally zipped J.Lo into her Oscars dress ... and then helped her change into another low cut outfit after the show.

Rob tells us ... he and fellow stylist Mariel Haenn personally informed Lopez about the buzz surrounding her areola during the outfit change ... and J.Lo simply laughed it off.

Rob says ... Lopez then assured the team she was so tightly packed into her dress, there was no possible way a nip could've slipped.

So what WAS the mysterious object that appeared on Jen's chest? Rob's convinced it was a shadow from the lighting.

So we gotta ask ...

Angelina Jolie looked INCREDIBLY skinny at the Oscars last night ... too skinny ... alarmingly skinny.

Just two days after leaving rehab at the Betty Ford Center, a refreshed and healthier looking Gerard Butler hit up the Vanity Fair Oscar Party in L.A. on Sunday.

Butler spent three weeks in treatment after realizing he was relying too heavily on prescription medication.

TMZ broke the story ... Butler began using pain meds to deal with the pain caused by the intense physical training regimen to get in shape for "300" ... and the problem became exacerbated after he injured himself in a surfing accident while filming "Of Men and Mavericks" back in December.

It's the Oscars, time to honor the best in this year's films and, more importantly, critique what everyone wore!

Check out the good, the bad and the ugly.

Jennifer Lopez and Cameron Diaz presented a pair of awards at the Oscars and they may have been joined on stage ... by JLo's areola.

The debate is raging on Twitter ... was it a nip slip? Maybe a shadow? Watch the clip and tell us ...

Sacha Baron Cohen took shameless promotion to a whole other level on the red carpet of the Oscars tonight -- not only did he show up dressed as his character from the upcoming movie "The Dictator" ... but he spilled an urn filled with fake ashes of Kim Jong Il all over Ryan Seacrest on live television.

Props to Seacrest though ... as he always does, Ryan took the whole thing in stride. 

Like the king and queen of the Hollywood prom, Brad Pitt and Angelina Jolie -- and her legs -- were among the last to arrive to the Academy Awards on Sunday.

We are not worthy.

Gwyneth Paltrow showed up to the Academy Awards wearing what looks like the remains of Celine Dion's infamous backward white tuxedo from the '99 Oscars.

We're just sayin'.

Looking like twinsies, "Scary Movie" queen Anna Faris and "Bridesmaids" babe Rose Byrne both wore severe bangs and shimmery black gowns to the Oscars.

Question is ...