Dress Code for Second round Interview

I would like the opinion of fellow Redditors here about the dress code. I was at an interview with a multinational company and the interview panel was in Jeans and a T-shirt. I was dressed in Smart business formals (Suit, Trouser... ). I am asked to come in for a second interview with the same panel and I am wondering what to wear. On the company website, they promote business formals during client visits. My thought was dress less formal or even Jeans and Tshirt. Will that be too little? Let me know your opinion. 

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