Rihanna and Brown have three songs together - 'Bad Girl', 'Turn Up the Music' and 'Nobody's Business' - which were not included in her her 28 song long setlist, reported Hollywood Life.
The 25-year-old performed her hit single 'What's My Name?' though, which is a collaboration between her and Canadian rapper Drake, Brown's rival.
Rihanna's in-concert omission comes just two days after Drake released a song that disses Brown and suggests that Rihanna spends time with Drake behind Brown's back.