Hayden Panettiere struck a pose at the 2012 Emmys at the Nokia Theatre L.A. Live on Sunday evening, and judging from this stunning and sophisticated outfit, the 23-year-old starlet is all grown up!

Hayden wore a gorgeous blue and gold Marchesa gown, and she accessorized with Harry Winston jewelry, Giuseppe Zanotti shoes, and a Judith Leiber bag. Hayden hasn't been on the small screen since her glory days in NBC's Heroes, but she'll make her return to the tube on October 10 for Nashville, where she plays a teen country music diva. Um, can't WAIT for this one!

Looks like this Monique Lhuillier gown is her lucky dress, because shortly after posing for photos on the red carpet, Julie Bowen won Outstanding Supporting Actress in a Comedy Series for Modern Family, beating out co-star Sofia Vergara for the second year in a row!

Right before the show Julie tweeted, "Good luck @SofiaVergara! You are crazy talented and deserve some hardware! #Emmys." Aww, well maybe next year? After all, Sofia has been nominated three times for the trophy...

Julie‘s co-star Eric Stonestreet won the award for Outstanding Supporting Actor in a Comedy Series, beating out his co-stars Ty Burrell, Ed O’Neill, and Jesse Tyler Ferguson.

January Jones posed for photos at the 2012 Emmy Awards, and the 34-year-old actress turned heads as she strolled down the red carpet in this stunning Zac Posen dress. Can you believe she gave birth to baby Xander just one year ago? She looks a-m-a-z-i-n-g!

January completed her look with a Cartier clutch and jewels and she rocked a pair of super high Christian Louboutin peep toe platforms -- LOVE the shoes! She may not be nominated for any individual Emmys this year, but AMC's Mad Men picked up a whopping 17 nominations, and rumor has it she's getting paid well over $100,000 per episode for season 6 and 7 of the show, so we don't feel too bad for her...

Muy caliente!

Latina lovely Sofia Vergara burned up the Emmys red carpet in this stunningly sexy Zuhair Murad teal beaded gown - with cut-outs in all the right places!

Can you believe the Modern Family actress is 40?! Like a good wine ... she only gets better with age ...

This year's awards show marks Sofia's third consecutive nomination in the Best Supporting Actress in a Comedy for her role on the ABC hit show. And Forbes magazine reported in July, that Vergara is the highest-paid actress on TV. Not a bad year for Sofia -- and a wedding to fiance Nick Loeb before the end of the year would top it off!

Claire Danes and hubby Hugh Dancy were adorable parents-to-be on the red carpet at tonight's 2012 Emmy Awards at the Nokia Theatre L.A. Live.

The pregnant, 33-year-old actress wore a canary yellow Lanvin strapless gown -- the perfect maternity look, without over-emphasizing the bump. And is this one of the first times we've seen an actress with-child who DIDN'T pose with her hands on her belly?! Love it!

Claire is nominated for Outstanding Lead Actress in a Drama Series for her role in the Showtime series Homeland. She's up against Kathy Bates, Glenn Close, Michelle Dockery, Julianna Marguiles and Elisabeth Moss.

It's that time of year again!

Rumer Willis, Krysten Ritter, Sofia Vergara and tons of Hollywood's TV stars were out and about over the weekend as a number of pre-Emmy parties took place, including Entertainment Weekly's bash at Fig and Olive and the Women In Film event in Beverly Hills.

Click through the pics to see what some celebrities wore for the festivities! The 64th Primetime Emmy Awards air live tonight on ABC.

Green Day's Billie Joe Armstrong is headed to rehab for substance abuse after his onstage meltdown at the iHeartRadio Music Festival on Friday.

"Green Day's Billie Joe Armstrong is seeking treatment for substance abuse," the band's rep said in a statement Sunday. "Green Day would like everyone to know that their set was not cut short by Clear Channel and to apologize to those they offended at the iHeart Radio Festival in Las Vegas."

The 40-year-old frontman went on a profanity-laced tirade after his band's performance was supposedly cut short.

‘‘One minute left, one minute (expletive) left. You’re gonna give me (expletive) one minute? ... I'm not (expletive) Justin Bieber, you (expletives)!’’ he screamed before smashing his guitar and storming off stage.

Armstrong was previously hospitalized in Bologna, Italy early September for an undisclosed illness.

Sharon Stone experienced a minor health scare when she attended a Fendi show in Milan, Italy with boyfriend Martin Mica on Saturday.

According to Us Weekly, Stone was rushed to a local hospital after she fainted during the event. The 54-year-old actress was diagnosed with migraine related symptoms but has since recovered well from the scare and even attended an amfAR benefit party with her Argentinian beau.

Glad to hear she's OK!