Tinie toured with Rhi Rhi, 22, in the UK last year and he has nothing but praise for the S&M singer.
Tempah told Rap-Up TV: 'I didn't know what to expect with Rihanna, you think, you're supporting a megastar, she is not going to know you, she's not going to care, but it was actually the opposite.
'It's nice to see somebody, behind the glitz and glamour and the flashing lights, is just a regular ordinary girl.'
The Pass Out hitmaker also revealed that Rihanna is actually calm when she goes out partying.
The 22-year-old said: 'I know she likes to party, but she really remained civil and demure and I like that. We definitely have high expectations of who you are and how you are and she definitely lived up to that.
'A little glass of champagne here and there.'