Jessica Biel / Twitter 1 / 22
Jessica Biel / Twitter 1 / 22

Add Jessica Biel to the long list of stars who are using social media to boost and burnish their image. She joined Twitter this week by sharing a behind-the-scenes photo of her preparations for Monday's Met Gala in New York, where she walked the red carpet with fiancé Justin Timberlake.

"I can't zip up my dress," the heavily banged actress tweeted of her Prada gown (see pic below). "Welcome to my world!"

She followed up that message with calls to action on important political and human rights issues. Just kidding. She actually replaced movie titles with a slang word for breasts (example: "T---y T---y Bang Bang" and "Big Trouble in Little T-----s").

Timberlake, who's one of the three people Biel is currently following, joined in on the fun.

Anyhoo, while Jessica, 30, may have had trouble squeezing into her couture, her engagement ring still fits just fine. She made a point of flashing it for photographers while holding onto Justin's arm (click through the images above to see), and she's already looking for a permanent companion for the massive sparkler.

Over the weekend, People and Us Weekly spied the couple trying on wedding bands at the shop of New York jewelry designer Eli Halili.

The pair, who are reportedly planning to tie the knot in a blowout nuptial bash this summer, also peeped out antique rings and other jewels, and though they didn't select any bands, they did leave with nearly $7,000 in merchandise, including a 24-carat gold ring set with a labradorite stone and two necklaces.

"They definitely seemed fond of each other," a decidely un-gushy insider tells People. "They were extremely personable, comfortable and relaxed. They weren't holding hands or anything, but they just seemed comfortable with each other."


See the many stars on the Met Gala red carpet

Fashion hits and misses from the Met Gala

Jessica: I have no problem fighting with a guy