When did she peak?

Whenever Sin City was made...

For me, she looked hottest during "Dark Angel"

But popularity-wise, career-wise --- 2005. The year when Sin City, Fantastic Four, and Into the Blue came out

If you're a man who boned her before 2014, you did well.

With her $1.44 billion cosmetics/baby company....

2005 Sin City 7 Fantastic 4 (not the sequel where they made her look like White Chicks)

for me it was exactly around 2005, Sin City and (more especially) Into The Blue.

IMO she looked her best of all time in into the blue. pure heaven.

Idle Hands 1999.

2007, since it was the first thing I thought of before seeing what you wrote. She was everywhere from 2005-07, and then she became irrelevant seemingly overnight. I'm not sure why other than she was in too many stupid movie/refused to get naked as she was still hot. People got sick of her and saw she had nothing to offer I guess.