Jamie Lynn -- Hello Ruby Tuesday

Published April 5, 2008 11:10 AM PDT | Updated June 15, 2019 6:44 PM PDT

Now we know -- Jamie Lynn isn't with Casey Aldridge for his money!

Britney's little-but-getting-bigger sis went out last night in Kentwood, LA., for some vittles on her 17th BD at Ruby Tuesday.

It must be love.

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