Travis Kelce has fuelled engagement and baby rumours with girlfriend Taylor Swift while discussing lab-grown diamonds on his podcast with his brother, Jason Kelce.

“You can’t tell me that dude wasn’t made in a f***ing lab over there in France,” he said on the “New Heights” podcast on Wednesday, referring to NBA star Victor Wembanyama, who is 224cm-tall.

Lab-grown diamonds, that’s a lab-grown f***ing NBA player. Can’t wait til I f***in’ make one,” the Kansas City Chiefs star, 34, added, per Page Six.

Jason quickly interjected, pleading with his younger brother to stop the conversation before he caused conspiracy theories to emerge.

“Don’t do this. Do not give any of these other conspiracy theorists anything else to latch onto, please,” the retired NFL star said.

Travis’ new comments sent fans into hysterics on social media.

This will get people to tune in that’s all I think this is if they we’re engaged or getting engaged I think Jason would be the one to hint at it not Travis also I really think it would be a family ring or vintage ring not a new ring,” tweeted one person.