In the late 90s and early 00s, singer Britney Spears had the world's most famous abs. You couldn't open a women's magazine without finding guides to get your belly looking like this:

Those abs were ICONIC.
Those abs were ICONIC.
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But even though the 34-year-old Spears is a mother of two, her abs still look amazing, albeit partially covered by a large (and reportedly temporary) tattoo. She revealed as much when she released several amateurish "tease" videos for her song "Breathe On Me" yesterday that show her rocking a bikini like it's 2001:

Sources: Instagram: Britney Spears