Alison DiLaurentis or Ali is back, and she has changed. "Pretty Little Liars" actress Sasha Pieterse is excited about how fans will welcome this new Ali. Recently, she chatted with Wetpaint and talked about this new Alison's appearance in the show.

"I love Alison, and the cool thing is, I never get bored because there's so many different things that she does, but [this season] is obviously different," told Sasha.

Alison has changed all this time as she has gone through lot in her life.

"Alison has gone through a lot, so there's going to be some changes in her. What has she been up to? Where has she been going? Why has she been hiding? All of those experiences have changed her in a way, and her dynamic with the girls is different, too. It's going to be interesting to see how that turns out."

Fans were shocked to learn that Ali was alive. The girls are shocked too.

"There's a lot of people she hurt, so it's not going to be easy for her to change people's minds. And right now, the girls are the only ones who know she's alive - or so we think," explained Sasha.

Sasha did not reveal if anybody is aware of Ali's secret. However, she mentioned that fans would not like to miss the "crazy and amazing" "Pretty Little liars" season 4 finale.

"Marlene [King] did say that this is the season for answers, and you basically do find out every answer to everyone's questions," said Sasha.

"The season finale blew me away, so I'm really looking forward to fans getting to see it. It's exciting because it's crazy and amazing, but at the same time, it was simple, which is so great because on Pretty Little Liars, you don't often see that," added "Pretty Little Liars" star Sasha.

"Pretty Little Liars" season 4B winter premiere air January 7, 2014 on ABC Family.