Is Ab Fab!
2/7/2012 4:45 AM PST
showed off her 42-year-old mother of two taut flat stomach while in Malibu the other day.
The "American Idol
" judge was looking belly good, as her 24-year-old boy toy lover Casper Smart
frolicked on the sand with her daughter Emme.
Ticking off Marc Anthony
is like a day at the beach.