Oh, Oh Sheila!

12/12/2008 4:30 PM PST BY TMZ STAFF
Sheila turns 51 today and showed up at an L.A. event on Wednesday, looking good.
Sheila E.
The accomplished percussionist appeared on "Idol Gives Back" earlier this year.

According to IMDB, Sheila is Nicole Richie's biological aunt. Her brother is Nicole's biological father.