Mackenzie Rosman is best known for her role as the sweet Ruthie Camden on the hit CW show 7th Heaven, is showing the world she is not a little girl during a racy photo shoot for the September issue Maxim.

Rosman, 23, is featured wearing pink lingerie in the new sexy images, which were reportedly taken in March.

"I caved... Just wrapped a #Maxim photoshoot," Rosman tweeted.

However, People magazine reports this is not the first photos of Rosman in her underwear have appeared on the Internet.  Personal photos of Rosman posing in her underwear and kissing a girl were reportedly leaked online back in 2008.

Rosman is also not the first 7th Heaven actress to show all; Jessica Biel, who played Ruthei's big sister, Mary, went topless for a Gear magazine back in 2000. 

"It was a big deal. The magazine was banned on set, I think by orders of [executive producer] Aaron Spelling," Rosman told Maxim about Biel's spread. "I sneaked a peek at it, though. It was racy gossip amongst the women of 7th Heaven. "

However, Biel told Entertainment Weekly she regrets the photo shoot and called it a poor choice on her part.

"That photo shoot was just a really bad decision on my part and I got myself involved with people who weren't thinking about me and were instead thinking about what kind of a story they could get out of it," Biel said.

Rosman, is currently filming a horror movie called "Beneath." She's made television appearances on the ABC Family show "The Secret Life of the American Teenager" and has a TV film "Ghost Shark" set to debut on SyFy Aug. 22.

Click here to see the photos of Mackenzie Rosman Maxim pictorial.

What do you think of Rosman's spread? Leave a comment below.