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Seal

Rebecca Sapp/WireImage.com

Performing wasn’t the only thing Seal did at last week’s Lupus L.A. Orange Ball in Beverly Hills.

The 45-year-old Grammy-winning singer also went public for the first time about having suffered from the autoimmune disease for about two decades.

“You’ve all shown your generosity and your support, and as a 20-or-so-odd-year sufferer myself, I feel really fortunate to be in the position to contribute,” Seal said.

After Seal's four-song set, the Lupus Research Institute announced it had established a medical grant in Seal’s name to be distributed to various lupus-related initiatives.