Nina Dobrev posed with her ex boyfriend Ian Somerhalder at a party celebrating the 100th episode of "The Vampire Diaries," which Nina Dobrev and her ex boyfriend Ian Somerhalder co-star on.

Nina Dobrev posed beside her ex boyfriend Ian Somerhalder, as well as the rest of "The Vampire Diaries" cast, at a party celebrating the 100th episode of the show, which is currently in its fifth season. Nina Dobrev wore a beautiful multicolored minidress by Naeem Khan, Brian Atwood shoes and an Amanda Pearl clutch, The Huffington Post reports. Nina also posed for photos alongside fellow "Vampire Diaries" co-stars Paul Wesley, Kat Graham and Candice Accola at the party, which took place on Saturday (November 9) in Atlanta, Georgia. Other guests included Daniella Pineda, Phoebe Tonkin, Charles Michael Davis, and Daniel Gillies, who brought his wife Rachael Leigh Cook, Just Jared reports.

"Officially wrapped our 100th Episode yesterday!!!!!!" Nina tweeted earlier in the day.

She also posted a photo of 100 cupcakes - a letter was written on each cupcake to form the message: "100!!! cupcake for every episode congratulations to our TVD family we would not be here without you Love, Julie & Kevin"

"Very excited+proud of cast, crew, writers for this incredible milestone! #family," Dobrev wrote on her WhoSay page with the picture of the cupcakes.

Ian Somerhalder, 34, wore a dapper suit to the party. He plays Damon Salvatore, the love interest of Elena Gilbert, which is Nina Dobrev's character on "The Vampire Diaries."

Ian and Nina dated for three years, but broke up earlier this year. 

As we previously reported, Nina Dobrev spoke to The District during the Savannah Film Festival about what shooting the 100th episode means to her, and what to expect in season 5.

"You dream that it'll get to the hundredth episode and now it's actually happening and it's sort of surreal," Dobrev said. "It's an homage to the last five years and it's very reminiscent."

"I'm excited for it, excited and sad. It's a very great episode and people are going to be very fulfilled in watching because of many reasons that I can't - I really can't share," Dobrev continued.