She was also sporting flawless makeup and her hair was perfectly coiffed, which is precisely why we’re so disappointed in her for stepping out with such obvious tan lines.

Come on JLo, you’re attending the launch of a book, which has you on the cover and the book is all about looking good! We bet it doesn’t advise you to go out with tan lines of any sort, at anytime, let alone when you’re posing for pictures on a red carpet.

We really hope she’s ashamed of herself.

UPDATE: We've just realised that when we upload the pictures to the website you can barely see her tan lines, which make us look pretty stupid - DAMN!