Taylor Swift Parties in the Hamptons at Bestie Karlie Kloss' Birthday Bash, Performs With Nelly

Taylor Swift Sings a Duet With Nelly at Bestie Karlie Kloss' Bir…

‘Big Brother’ 25: Houseguests Reflect on Record-Breaking, 100-Da…

Travis Kelce on How His Romance With Taylor Swift Really Began

What Selena Gomez Thinks About Taylor Swift Romance With Travis …

Ryan Reynolds Trolls Blake Lively and Taylor Swift With Travis K…

Watch Travis Kelce React to Taylor Swift-Inspired Sign at Chiefs…

Leonardo DiCaprio Shows Off Dance Moves and Raps at Star-Studded…

Flavor Flav Delivers a Taylor Swift Surprise at Rock & Roll Hall…

Inside Taylor Swift and Travis Kelce’s Date Night With Patrick a…

Amber Rose Recalls Infamous VMAs Moment With Ex Kanye West and T…

'Big Brother' Season 25 Finalists Take a Pop Culture Quiz: Taylo…

ET Vault Unlocked: Cher | Never-Before-Seen Interviews and Her L…

'Black Panther' Stuntman Dies Along With 3 of His Children in Ha…

Maui Wildfires: A Look Inside How the Island Is Rebuilding

Watch Missy Elliott, Sheryl Crow and Chaka Khan Get Inducted Int…

'RHONJ's Margaret Josephs on Dynamics Drastically Changing in Se…

Chase Stokes Gives Update on Romance With Kelsea Ballerini (Excl…

Ashley Graham Shares Working Mom Advice on Juggling Three Kids (…

Sanya Richards-Ross on Expecting Baby No. 2 and Hopes for Anothe…
Dilemma or just good fun? Taylor Swift rocked out over the weekend at a birthday party for her bestie Karlie Kloss and oil heir pal Mike Hess in the Hamptons. The “Blank Space” singer joined rapper Nelly on stage at the soiree, singing Kelly Rowland’s part to his hit song, “Dilemma.”
An eyewitness tells ET that the 26-year-old GRAMMY winner was having fun at the party when Nelly asked her to join him on stage.
“She hesitated at first but decided in the end to do it,” the source tells ET.
Swift, wearing a black off-the-shoulder crop top and matching skirt, danced along to the popular tune, and was captured on Snapchat goofing off with Hess.
Another source tells ET that there was nothing at all romantic between the pair and that Swift gave the birthday boy a sweet peck on the cheek after wishing him a happy birthday.
The singer’s new beau, Tom Hiddleston, was not at the bash, the source confirms to ET.
Taylor Swift compareceu à festa do Nelly em Hamptons, NY (06/08). Confiram: https://t.co/UUjCmOZHR5pic.twitter.com/wifRO5fsH3
— SwiftWorld.com.br (@SwiftWorld_BR) August 7, 2016
In addition to Swift, Nelly, and the birthday girl, other celeb guests included Chris Rock, Hamilton alum Leslie Odom Jr., and supermodel Heidi Klum.
Swift and Hiddleston were last spotted together earlier this month. The Avengers star left Swift’s Los Angeles home to return to Australia solo, where he is filming a movie.
WATCH: Taylor Swift Sports a Sexy Velvet LBD for Date Night With Tom Hiddleston -- See the Hot Look!
Though the singer has been noticeably quiet on social media since her blowout feud with Kanye West and Kim Kardashian, she did take a moment to celebrate Kloss’ birthday on Instagram.
“I LOVE YOU KARLIE! You're such an exquisite person, always trying to make things better for others. Every day I'm inspired by how giving, loving, and thoughtful you are. Happy 24th Birthday!!!
@karliekloss,” she captioned a cute selfie.