All grown up! Hard-working Ariel Winter celebrates her 15th birthday by attending a red-carpet event looking elegant in black

PUBLISHED: 02:24 EST, 29 January 2013 | UPDATED: 13:47 EST, 29 January 2013

Two days, two red carpets and one perfect teen queen.

Modern Family star Ariel Winter celebrated her birthday by stepping out for the premiere of her new animated film, looking flawless in Los Angeles, California, on Monday evening.

Birthday star: Ariel Winter walks the red carpet for Batman: The Dark Knight Returns - Part Two in Los Angeles, California, on Monday

For two nights in a row, the now 15-year-old has tread red carpets across Hollywood.

On Sunday, she shone at the Screen Actors Guild Awards and then the next night she looked every inch the star at the Paley Centre.

Ariel was the guest of honour on Monday after voicing Robin in the new cartoon Batman Returns: Part Two.

Perfectly polished: The 15-year-old looked flawless in a black cocktail length gown

For the premiere, the young starlet wore a cute but age appropriate black cocktail dress by Angelys Balek.

Featuring an unusual leather-look design on top, the dress' skirt was a sparkly loose fit tulip shape and even had pockets.

The birthday girl accessorised her look with simple diamond jewelry, a square Lucite clutch and black T-bar heels.

Her birthday look was in stark contrast to her almost Disney princess-like gown at the SAG Awards - where she along with her Modern Family co-stars took home best overall cast in a comedy.

Lovely locks: The Modern family star wore her fair swept to the side in curls

Hard working: The young star also voices the character Robin in the new Batman cartoon

Cast and crew: Ariel and actor and producer Kevin Smith posed with Bob Goodman, Andrea Romano, Jay Oliva and Bruce Timm

Holy Batman! Peter Weller, who voices the part of Bruce Wayne and Batman, was also in attendance

Donning a dress by Australian designer Alex Perry, the young star was transformed into a storybook princess.

The teen actress looked like every young girl's fantasy in her peach chiffon gown with flower embellishment, complete with jeweled ivy snaking down the bodice and arm.

Despite having to work on her birthday, Ariel was in good spirits.

While Ariel has suffered family problems recently - she sought legal emancipation from her mother last year - the 15-year-old has found a family in her television family.

Perfect princess: On Sunday the starlet looked like a fairy tale character at the Screen actors Guild Awards

During the awards she tweeted pictures of her cast mates from Modern Family, including on of her onscreen brother Luke saying 'Love my fake little brother!!!!'

The rest of her showbiz family also made sure to mark the young actress' birthday with Disney - she is the voice of a princess in the animated Disney series Sofia The First - sending her birthday flowers.

'LOVE my beautiful flowers from my loves at Sofia the First. :) having a great birthday!,' Ariel said on Instagram.

Happy birthday: Ariel shows off some birthday flowers on Instagram

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All grown up...LOL!

- Carl Spackler , Bushwood, United States, 29/1/2013 17:37

Click to rate Rating 5

I love her both on and off of Modern Family. I hope she gets her home situation straightened out before it does her permanent damage, which has most likely already happened. And su6690, she usually looks her normal, fresh-faced 15 years. I think all of the young actresses are aged horribly by their stylists and make-up artists for awards shows. The only two teenage stars I can recall who ever avoided the awards show aging curse was Claire Danes (back during My So-Called Life) and Dakota Fanning.

- K. Anderson , Charlotte, 29/1/2013 17:27

Click to rate Rating 4

saying that she has been wearing more age appropriate clothes since her mum is not in the picture anymore is wrong,her mum is human and makes mistakes, so we should stop judging other people lives as we don't know the ins and outs in each one families....

- nanamonie , dublin, Ireland, 29/1/2013 16:53

Click to rate Rating 2

Wowza, Robocop looks SUPER OLD! Now I feel old... :'( - EmmaLDN , London, 29/1/2013 11:19-------And, iof I remember correctly, he was also a professor of history at Syracuse University....Brawn and brains, a well rounded man.... ;-)

- daria , USA, 29/1/2013 14:08

Click to rate Rating 9

Who is this child and why are you droolling over her?

- Abernathy , Birmingham, North Korea, 29/1/2013 13:35

Click to rate Rating 46

Has anyone else noticed that she's been dressing a lot more age appropriately since she got rid of her so called 'Mum'. She looks lovely!

- Emmz , Scotland, 29/1/2013 11:51

Click to rate Rating 158

Wowza, Robocop looks SUPER OLD! Now I feel old... :'(

- EmmaLDN , London, 29/1/2013 11:19

Click to rate Rating 20

Who is she and why is this "news"?