Is that her real ass-crack?

In the shot where she bends over and Segal checks out the printing on the backside of her panties, there is a black line down the middle of her ass.

Are panties truly thru? Is that Babs' real genuine ass-crack on display??? Or is it just a seam in her opaque panties?

Not that I care, but I love it when superstar privates are blown up to widescreen!

"Don't call me 'honey', mac."
"Don't call me 'mac'... HONEY!"