Both Belfast schools are well-represented at the Kingspan Stadium as fans look to cheer their team onto glory.
Check out our photo gallery of some of the best snaps from the day so far.

5. View from the stands
RBAI fans take their seat at the Kingspan Stadium ahead of kick-off against Campbell College Photo: Toby Gosnall

6. Getting behind their team
RBAI fans get behind their team at the Kingspan Stadium Photo: Toby Gosnall

7. Signs at the ready
Campbell College fans have their signs ready to go at the Kingspan Stadium Photo: Toby Gosnall

8. Wearing the colours
A Campbell fan shows their support with the school colours painted on their face Photo: Toby Gosnall
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