Demi Lovato 2014: Wilmer Valderrama's Girlfriend Threatens Fifth Harmony on Twitter and Instagram [VIDEOS, PHOTO], 'Neon Lights' Artist Gets Hit in the Face with Pie During Tour Prank

Demi Lovato had an awesome time while on her "Neon Lights" with Fifth Harmony however, the "Let It Go" singer got a shocking surprise on the final night when she received a pie to the face.

According to E! News, Fifth Harmony songstress Dinah Jane Hanson took to Instagram to post videos of the hilarious incident which was clearly planned in advance.

In the first clip the girl group approaches Lovato and one of the members says, "I just want to say I love you," before they all begin to scream as the pie hits the pink haired starlet in her face.

Shocked by the attack and covered in whipped cream Wilmer Valderrama's girlfriend yelled, "I'm going to f--king kill you!"

In the next video she continued with her rant and said, "That's great, that's great and when I see you in L.A., you're a** is mine!!

Following the messy prank the "Skyscraper" singer took to Twitter to share a photo of herself with fans.

She captioned the photo, "#whipcreamhair #sillystringdreads #lipstickkissies #tourpranks #BESTNIGHTEVER."

Despite the prank and all the fun times on tour the ladies of Fifth Harmony who formed on the "X Factor" in 2012 were grateful for their time with the 21-year-old star.

Ally Brooke Hernandez shared a picture of herself and Demi Lovato. The caption read, "Thank you for one of the best experiences of my life thus far. gonna miss you!! love you @ddlovato."

The "Heart Attack" artist shared similar feelings and tweeted, "SO proud to see @FifthHarmony doing SO well.. I knew they were stars the moment I helped put them together..Superstars.. I LOVE YOU GIRLS!!!"

Following her cream filled prank Demi Lovato was in no mood for April Fools Day. She took to Twitter and wrote, "I'm all pranked out... Anyway happy April fools day!!"

Check out the videos of Demi Lovato getting pranked with pie below.