>> reporter: it's not only star-crossed romance that holds the attention of celebrity-minded magazines. on a parallel track, the ups and downs of celebrity bodies and diets keep readers enthralled too. in the celebrity weight loss world, there are the big success stories. like newlywed valerie bertinelli. the sitcom sweetheart who used jenny craig to lose 40 pounds and rock this bikini. >> i've been given an opportunity to -- i guess be the poster child for getting your [ bleep ] together, maybe. >> reporter: but putting on a few, or maybe more than a few, gets everyone talking. it even gets celebrities talking back. celebrity diet and fitness sagas pull their weight at the newsstands. that's why editors at "us weekly" offer a 23-page package in their january 10th issue. why is the first of the year a good time to do an issue like that?