Taylor Swift performs in Singapore

Taylor Swift performs at the Singapore Indoor Stadium on June 12, 2014 in Singapore, Singapore. 

Nicky Loh/TAS/Getty Images

With so many A-listers taking part in the very viral ALS Ice Bucket Challenge, even more pop stars are getting in on the charitable action. On Saturday (August 16), Taylor Swift, Selena Gomez, Carrie Underwood, Fifth Harmony and The Vamps all dumped a bucket of ice over their heads, which is helping spread the message about Lou Gehrig's disease.

The challenge has grown bigger and bigger since it kicked off, with folks not only taking part in it, but also nominating their pals to do the same. Those nominated have 24 hours to respond to the call of action or they have to donate $100 to the cause. And, in many cases, folks are doing both.

Swift was joined by actress Jaime King for her video. She was in the middle of rehearsals for her 2014 VMAs performance. She had been challenged by Ingrid Michaelson and Lily Aldridge. She has since nominated pals Selena Gomez, Emma Stone and Ed Sheeran. And, yes, she also donated to the cause.

Selena accepted the challenge in no time, posting her video to Instagram. She wrote, "Accepted!!!! @ryanseacrest @taylorswift my whole team is donating!"

 

Underwood brought hubby, hockey player Mike Fisher, along for her video. And, they even stepped it up by having a forklift dump ice cold water on them. Underwood passed the challenge onto Sugarland's Jennifer Nettles.

Lucky for their fans, The Vamps went shirtless for their challenge. And while Underwood had a forklift do the heavy lifting, it was Fifth Harmony who dumped water on the British pop band. And, they set their sights pretty high, nominating President Obama to take the challenge.

While the fellas of The Vamps got soaked by the ladies of Fifth Harmony, the girls also accepted the challenge, posting their own video. Take note, Austin Mahone, the girl group has since nominated you.

(As of press time, most of the newly challenged had not been iced. Yet.)