While Nina Dobrev is enjoying her time being best dressed star of the week, her ex-boyfriend Ian Somerhalder is in London picking up blondes.

Dobrev was photographed wearing a white gem-studded Azzaro mini dress with a simple silhouette save for the keyhole cutout. The actress completed the gorgeous outfit by pairing it with metallic Jimmy Choo sandals and a woven black clutch for the CW Upfronts party in N.Y.C., according to People Magazine. The ensemble earned the actress 19,000 likes.

To see the photo that earned Nina Dobrev the best dressed look click HERE.

Meanwhile, Ian Somerhalder was spotted in London leaving Groucho Club on Wednesday night with a pretty blonde by his side holding on to his arm. However, in situations like this, one should never jump to conclusion.

According to E! News, the 34-year-old actor and activist started his evening by grabbing dinner with his father in which he tweeted, "Late night eats with my old man in Soho,sipping Chianti and talking @is_foundation aka https://isfoundation.org Farm plans-priceless..."

Following his rendezvous with papa Somerhalder, the actor was photographed looking casual while sporting a pair of jeans and a brown leather jacket with a mystery blonde hanging on his arm. Although his reps have not confirmed who the lovely lady is, E! News may have found an answer.

To see the photo of Ian Somerhalder and the blonde click HERE.

A Google image search and some body language clues led the network to discover that the blonde is most likely the actor's sister, Robyn.

Celeb Dirty Laundry recently reported that the relationship between "The Vampire Diaries" co-stars has been over for it while they just recently decided to let it become public knowledge.

According to the site Somerhalder ended the relationship shortly after the Oscars earlier this year, but wanted to keep the news quiet. However, Dobrev was hoping the split was temporary so she remained quiet about it as well.

Eventually, the actress grew tired of the lie and let her friends leak the split to the press. However, a source told E! News that the actors continue to remain friends and speak daily.

"There's no bad blood between them," the source said. "There was no other person involved or any big fight."

For more Nina Dobrev and Ian Somerhalder news, click HERE.