AJ Michalka checks a message on her cell phone while running a few errands on Wednesday afternoon (November 14) in Calabasas, Calif.

The 21-year-old actress picked up a cool iced coffee on her way back to her car.

PHOTOS: Check out the latest pics of AJ Michalka

Earlier in the week, AJ hit the carpet at The Twilight Saga: Breaking Dawn Part 2 premiere in a midnight Keepsake dress.

“Thank you @theshopgirls ! I loved my @keepsakelabel dress last night! Had a blast at #Twilight Xo AJ,” she wrote on Twitter.

10+ pics inside of AJ Michalka… More Here! »

Ashley Tisdale and AJ Michalka arrive at the premiere of The Twilight Saga: Breaking Dawn Part 2 held at Nokia Theatre L.A. Live on Monday night (November 12) in Los Angeles.

The 27-year-old actress, in Free People and Christian Louboutin booties, tweeted, “Breaking dawn part 2 premiere with @jenkellytisdale! #enoughsaid #suckerforvampires.”

Over the weekend, Ashley joined Sarah Hyland and Kim Hidalgo in Las Vegas to celebrate gal pal Samantha Droke‘s brithday at Tao Restaurant.

The girls dined on satay bass, orange chicken and sushi before making their way to the nightclub to celebrate. Yum!

15+ pics inside of Ashley Tisdale… More Here! »

AJ Michalka and Colton Haynes head out of Bagatelle restaurant in Los Angeles on Friday night (November 2).

The two pals enjoyed a dinner at the popular eatery.

PHOTOS: Check out the latest pics of AJ Michalka

AJ isn’t the only one who had a full Halloween weekend — so did Colton!

Colton, 24, dressed up as Gandhi, Powder and Nemo from Finding Nemo!

“Can you help me find Nemo? http://instagr.am/p/ReWy3zjTI5/” he tweeted with a cute pic.

10+ pics inside of AJ Michalka and Colton Haynes at dinner… More Here! »

AJ Michalka checks a message on her phone while out and about on Wednesday afternoon (October 31) in Calabasas, Calif.

The 21-year-old actress/singer picked up some dry cleaning on her way back home, where she got dressed for another Halloween party.

“A flower child… @danielagysler Love my dress :) Happy Halloween everyone xoxo http://instagr.am/p/ReKg6ok0lv/” AJ tweeted.

Earlier over the weekend, AJ was spotted at JustJared’s Halloween bash as Goldilocks with big sis Aly and as the Mad Hatter at another party with pal Patrick Schwartzenegger.

TELL JJJ: Which of AJ’s costumes do you like better?

10+ pics inside… More Here! »

Aly and AJ Michalka steal the spotlight at JustJared’s 2012 Halloween Party held at Siren Studios Orange in Hollywood on Saturday night (October 27).

The 78violet sisters dressed up as a Black Swan ballerina (Aly) and Goldilocks (AJ).

Later in the weekend, AJ met up with Patrick Schwarzenegger for more Halloween costume shopping for Matthew Morrison‘s party on Sunday night (October 28).

This time around, AJ dolled up as a Mad Hatter while Patrick went as Peter Pan.

JJJ Fun Fact: Aly and Patrick star in the upcoming Grown Ups 2 together.

20+ pics inside… More Here! »

Check out this pretty pic of Aly Michalka!

The 23-year-old actress/singer showed off her new dark brunette locks via Twitter.

PHOTOS: Check out the latest pics of Aly Michalka

Last week, Aly and her sister AJ shared some exciting news, saying, “Only two more days & we are finished on the album. Thank you to all the amazing fans who have greeted us outside the studio, you make us :).”

The girls recently announced that new 78violet music would be out next year!

ARE YOU EXCITED for songs from Aly and AJ in 2013?

Aly and AJ Michalka are beautiful in this recent pic they uploaded to Twitter.

The sisters tweeted out the pretty snapshot with the caption: “Date Night :p.”

PHOTOS: Check out the latest pics of AJ Michalka

That same day, the blonde duo warned fans about music being released that claimed to be their band 78violet.

“Anyone posting a supposed single or even a snippet of 78violet music is fake. When the songs are ready they will be released by us in 2013….:) x.”

ARE YOU EXCITED for new 78violet music next year?