Stepping out for a night on the red carpet, Natalie Portman was looking lovely at IFP’s 19th Annual Gotham Independent Film Awards at Cipriani, Wall Street in New York City on Monday (November 30).

The “My Blueberry Nights” babe mingled with fellow attendees before her podium duties, smiling as she posed for pictures alongside Stanley Tucci.

The awards show outing comes as Miss Portman has been getting into promotional mode for her new movie “Brothers,” which hits theaters this Friday (December 4).

Co-starring Jake Gyllenhaal and Tobey Maguire, the Jim Sheridan directed flick is about “a young man who comforts his older brother’s wife and children after he goes missing in Afghanistan.”

Getting used to the single life once more, Avril Lavigne was spotted out for a photo shoot in Los Angeles on Monday afternoon (November 30).

Not far removed from her split from ex-hubby Deryck Whibley, the “Sk8ter Boy” singer strutted into the studio while getting some help from her brother Matthew when her hot black zippered pants created some discomfort.

According to a source on the scene, Matthew kept a very close eye on his younger sister, making sure she didn’t reveal too much when she unzipped her pants to tuck them into her waist.

The sighting comes after rumors of a random hookup for Miss Lavigne during a recent trip to NYC, which follows reports that she was getting cozy with Wilmer Valderrama.

Of the situation, an insider told Life & Style, “They have been friends since working together on Fast Food Nation in 2005, but things heated up last month. One of their first dates was Oct. 29 at Nobu in West Hollywood.”

Just seven weeks removed from giving birth, Alicja Bachleda-Curus showed off her already-slim figure while vacationing in Mexico on Monday (November 30).

The mother of Colin Farrell’s newborn son, Henry Tadeusz Farrell, strutted her stuff poolside at the couple’s Mexican resort - spending the day reading, drinking water and flaunting her fabulous post-baby body.

As previously reported by Gossip Center, Alicja and Colin flew down to Mexico over the holiday weekend for the much-needed getaway.

Meanwhile, it is rumored that Farrell and his lady will be traveling home to Dublin for Christmas to introduce little Henry to his family members.

Offering up her sisterly support, Jessica Simpson attended the opening night of her sister’s performance in Chicago at the Ambassador Theater in NYC on Monday (November 30).

Showing off her cheerful smile, the “Dukes of Hazzard” damsel squeezed past a crowd of bystanders as she headed into the theater to cheer on Ashlee.

Taking to her Twitter account to boost interest, Jess wrote last night, “I’m in NYC for my sis being Roxy in Chigaco tomorrow night. I’ve looked forward to this moment since I watched her own the stage in London.”

A little while later, Miss Simpson added, “Everyone in NewYork come tomorrow night and watch my sister at her best!!! I’ll be there celebrating her return!”

Making the long flight home to the States, Britney Spears was spotted arriving at LAX Airport in Los Angeles, California on Monday (November 30).

Escorted through the terminal by her trusty security staffer, the “Gimme More” singer looked happy to be back home after finishing up the final leg of Circus tour in Australia.

As previously reported by Gossip Center, Brit-Brit seems to be set on writing off any future visits to Australia - as she was reportedly “extremely upset” by the coverage her tour received from the lip-synching fiasco.

“She’s a human being,” Promoter Paul Dainty told press. “I’m embarrassed - with such a big international entourage here with Britney - to be part of the Australian media when I see that kind of totally inaccurate reporting.”

Making her way back to the States, Rihanna touched down at LAX Airport in Los Angeles on Monday (November 30).

The “Umbrella” singing beauty was decked out in a casual all-black ensemble as she trekked through the terminal after a long flight from London.

As previously reported by Gossip Center, Ri-Ri took to the stage at “X-Factor” the previous night for a killer performance of her latest single “Russian Roulette.”

During the show, she revealed that she’ll be going on tour this spring, with tickets going on sale in two weeks.  “I can’t wait to come back here,” Rihanna said of England.

Back together as a parenting team, Jennifer Garner and Ben Affleck were spotted picking up their daughter Violet from school in Santa Monica on Monday (November 30).

The former “Alias” actress followed along as her “Good Will Hunting” hubby toted his eldest daughter out to the car following her day’s schoolhouse lessons.

The sighting comes as Ben and Jen ready for a big celebration - as Violet will be celebrating her 4th birthday tomorrow.

The happy family will surely be cooking up something special, as Ben just returned back to the west coast after spending the summer in Boston to film his new movie, “The Town”.

Hot on the promotional trail, Miranda Kerr was spotted dropping by MTV Studios in Times Square on Monday evening (November 30).

Following a morning pharmacy errand run, the catwalk cutie headed over to the Big Apple set for a press appearance on the TV show “It’s On with Alexa Chung”.

The MTV visit comes as Miss Kerr helps to boost interest in tomorrow night’s Victoria’s Secret Fashion Show - which airs at 10/9C on CBS.

Having been previously taped in NYC, the VS extravaganza features the lingerie giant’s latest looks - all on display via Miss Kerr and her fellow Victoria’s beauties.

Paying a visit to New York’s MTV Studios in Times Square, Taylor Momsen was spotted making her way inside earlier today (Nov 30).

The 16-year-old blonde beauty looked cute in a long green collared shirt, thigh highs and heels underneath a long fur coat. (Hopefully faux!)

Ms Momsen smiled pretty for the snapping cameras and cheering crowd before heading inside for her guest appearance on “It’s On With Alexa Chung” which aired today at 3:30 EST.

In other news, it is being reported that Taylor is upset with “Gossip Girl” co-star, Leighton Meester because the CW is using Meester’s music on the show and not hers.

A rep from the CW stated, “The show will support Taylor and her music when the time is right, but her music is not ready yet.”

Momsen’s grunge band, “The Pretty Reckless” is signed to Interscope, but has not released an album yet.

They broke off their engagement back in 2006, but it looks like things are heating up again for Sienna Miller and Jude Law.

The Brits, who are currently both living in Manhattan because of their roles on Broadway, celebrated Thanksgiving together at an Italian restaurant in the Nolita section of NYC.

An insider told Star magazine, Miller and Law arrived just after midnight and ordered pizza, along with a $350 bottle of wine.

“They came in holding hands and kept touching each other and kissing throughout the entire meal,” says the insider. “They only had eyes for each other!”

Although both reps have denied the recent reports that the couple has rekindled.