"The Vampire Diaries" season 8 is the highly anticipated final installment of the franchise and everything became more memorable with Nina Dobrev's return. Now, it remains a mystery if she will be coming back as Elena Gilbert or Katherine Pierce.

According to Celebrity Dirty Laundry, it is possible that Katherine Pierce will appear on Stefan (Paul Wesley) and Caroline's (Candice King) wedding. One significant reason why fans think that she will be going on their wedding is because of Katherine's obsession to Stefan. After all, it can be remembered that she has been in love with him for over 150 years now.

Katherine may have been killed in season 5 but who knows what the supernatural world has prepared for the fans. Plus, Caroline was also seen wearing Katherine's necklace on her wedding day, which adds a bit of a goose bumps. Meanwhile, she was also known for being in charge of hell that is why fans think she might carry on her revenge against Stefan and Damon (Ian Somerhalder) once she returns. Not only to them but also to everyone who wronged her at Mystic Falls.

On the other hand, Dobrev was also seen in one "The Vampire Diaries" season 8 teaser looking at a trophy in Mystic Falls Highschool. In the clip, she asked, "Why am I here right now?" New photos were also released by The CW network for the upcoming finale and it includes Dobrev. Unfortunately, it remains unknown whether she is back as Elena or Katherine.

Buddy TV reported that it seems like Elena was not able to contain her feelings to Damon when she finally woke up. She runs towards him as the Salvatore brothers welcome her back. However, the finale teaser gave the fans mixed emotions. Some fans are still rooting for Stefan and Elena's past relationship. And others think that the one who returned is Katherine, and she is just tricking the Salvatore Brothers.

More updates will be revealed about "The Vampire Diaries" season 8 once details are available. Stay tuned for more exciting updates.