While his brother Chris Sebastian took out the crown in The Voice finale on Sunday night, it was Guy Sebastian's outfit that stole the show with viewers mocking the unique look on social media.
The 38-year-old wore a pink suit with a green turtle neck with some fans comparing him to a Bond villain.
One user wrote, "Ok I’ll say it... What the blinking hell is Guy wearing? It looks like something the dad off Thunderbirds would wear."
Another joked, "I watched the Guy Sebastian special a few weeks back and he cringed at the clothes he has worn in the past. Was it filmed before or after The Voice?"
"Whoever is styling Guy’s clothing choices should be voted off," someone else wrote.
"Guy Sebastian’s turtle neck/white suit combo makes him look like a minor villain from a 1970’s James Bond film," another added.
It wasn't all bad, however, with one user writing, "This is probably the best outfit Guy has worn in weeks."
It's not the first time people have made fun of Guy's outfit on the show.
Last week, fans were left amused after he wore an all-pink outfit that some joked made him look like a "musk stick" or the Pink Panther.
"[Guy's] stylist is begging to be fired at this point," one user said.
Another added, "Is there a mirror around when Guy gets dressed? How bad have his outfits been!"
Someone else joked, "Guy looks like a Cluedo character. ‘Mr Pink is in the billiard room with a candlestick’."
Fans call The Voice 'rigged'
Many viewers were shocked when Guy's brother Chris won The Voice with many seeming unhappy with the final results, even going so far as to say the show is "rigged" and "unfair".
Chris walked away with $100,000 in prize money and a recording contract with EMI Recorded Music Australia after beating Stellar Perry, Siala Robson, and Johnny Manuel in the grand finale.
The win came as a shock to many as Chris hadn’t been the favourite going into the final episode of the Channel Nine show.
“Didn’t see that coming at all,” one viewer posted on Facebook after the final results were revealed.
“It was totally rigged, never watching this again,” another person wrote.
“I stopped watching last week when I found out Chris was in Finals. Foregone conclusion he would win due to his connection,” was another response.
Plenty of others however defended Chris, applauding the singer for his win.
“Well done Chris Sebastian, an amazing artist in your own right,” one person wrote.
“He deserved it, and to all the people saying he only won because of his brother.... get a life he has an amazing voice,” another fan wrote.
According to Channel Nine, the final vote was exceptionally close, with less than 0.5% separating first and second place.
Chris sang Linkin Park's Numb for his solo performance, handing the win to his coach Kelly Rowland. His winner's single 'Bed for 2' is out now.
With additional reporting by Kristine Tarbert.