Taylor Swift gets hot under the collar with Nelly

Taylor Swift turned the heat up with Haim and Nelly during her 1989 World Tour on Tuesday (29Sep15).

The musician is known for bringing some of the industry's hottest names up on stage with her, with rapper Nelly now making the list.

American band Haim also joined Taylor to belt out classic track Hot In Herre in front of the crowd in St. Louis, Missouri.

"I LOVED getting to sing The Fix & Hot in Herre with @Nelly_Mo! What a way to end @HAIMtheband's run on the 1989 Tour (sic)," Taylor tweeted alongside a flame emoji.

She added snaps from the concert, one showing herself in a white bejewelled crop top and matching shorts grinning as she posed next to the R&B star and the girls, who were also dressed in white.

Alana Haim, who founded the group with sisters Este and Danielle and cousin Dash Hutton, seemed overwhelmed by the exciting moment.

"I just danced with @Nelly_Mo with @taylorswift13 OFFICIALLY LOST MY CHILL #1989TourStLouis," she tweeted, while Este added: "casually danced behind Nelly on my last night of tour".

But amidst all the singing and dancing, Taylor made time to dispel the rumours that have been going around in the press. Reports had been claiming the Bad Blood singer and her Scottish DJ beau Calvin Harris were planning to wed in a $2million British ceremony. Another stated she'd paid $25million in cash for a Beverly Hills home.

But it's all made up, insists the 25-year-old.

"What the press says I'm doing: Buying a Bev Hills mansion, getting married in an English castle. What I'm doing: Playing a show in St. Louis," she neatly rubbished the claims in one tweet.