Jamie Lynn Spears Covers Britney's 'Oops!… I Did It Again'
PHOTO: Jamie Lynn Spears is seen singing in this undated video posted to YouTube by user Trevor Collins.

(Photo Credit: Trevor Collins/YouTube)

Sisters are always fighting over boys … but songs?

Well, it may not have been a fight, but last week while performing in Decatur, Ga., Jamie Lynn Spears busted out one of Britney Spears' classics "Oops!… I Did It Again," People magazine reports.

It's pretty amazing.

Read: Jamie Lynn Spears Releases First Single

Wearing a purple t-shirt and denim jacket, the younger Spears begins singing her own song "Ms. Mississippi" and after about two minutes, just begins singing those classic lines, "Oh, yeah, yeah, yeah."

The crowd goes crazy and the transition is harder than you'd think because her song "Ms. Mississippi" is actually a country song. Spears, 22, puts her own country spin on " I'm not that innocent."

Check out the video below.

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