Pippa Middleton Media Stardom Grows Into Documentary

Aug. 2, 2011— -- Who is she?

From the moment that tooshie hit the altar, it was the question millions around the world asked. The girl in that white dress, with the glowing smile and mysterious allure, who took in the wedding with a sort of silent grace.

And we're not talking about the bride.

The name Pippa Middleton held marginal significance until the 29th of April, when her big sister, Kate, tied the knot to Prince William. Now known as the sister-in-law of Britain's apparent future King, Middleton, 27, gained immense popularity virtually overnight, even garnering the moniker "Her Royal Hotness."

"It's all part of the Middleton interest, the ordinary family being part of the royal family. It's the dream, the fantasy," said Colleen Harris, former press secretary to Princes Charles, William and Harry.

You know you've hit it big when, within mere months of your name taking over the twitterverse, you're the sole subject of a film. Next week, TLC will air a one-hour special entitled "Crazy About Pippa," a documentary that tries to answer the question of who is this British party planner and what is she really all about?

"Our interest stemmed from the fact that a pretty young woman entered Westminster Abbey as a sister of a bride, and emerged as a global phenomenon in the space of an hour," the film's executive producer, David Notman-Watt, said. "It was literally within minutes of her appearing holding Kate's train, Twitter went crazy, Facebook went crazy."

Examining Middleton's rise to fame, the documentary touches on many of the elements that have boosted Middleton's star power. From her party life in London's trendy Chelsea neighborhood to her strict fitness regime, experts including relatives and journalists weigh in on why everyone actually is crazy about Pippa.

Claudia Joseph, author of biography "Kate: The Making of a Princess," said the apparent future queen's sister has a certain je ne sais quoi. "[Pippa and Kate are] two very attractive girls who've been mingling with the royals for a number of years," she said. "But people know very little about them and that's part of their mystique."

As for what everyone really wants to know -– whether Harry and "Perfect Pip" are actually more than just friends -– it's a tough one to tell. Although Harry is rumored to have nicknamed Middleton a "foxy filly," there has been no hard evidence of a romance. But the television special touches on the duo's outings and travels, hinting at potential for a relationship.

But a sure headline-maker viewers will want to know about is that derriere. With Facebook groups dedicated to Pippa's posterior and men ogling the star, will we find out how this baby actually got that back, and if her Alexander McQueen gown could have been padded?

"It certainly seems to have caught the imagination of a lot of male royal watchers," former press secretary Harris said.

One male in particular, Steven Hirsch of Vivid Entertainment, even offered Pippa $5 million to star in her own pornography movie, claiming in the documentary that she could be an "enormously successful adult star." Not surprisingly, he hasn't heard back from the Middletons.

And whether you actually believe in this speedy rise to fame, executive producer Notman-Watt said, it's clear Pippa's 15 minutes of fame will run a bit longer than expected.

"She is watched 24/7 now, probably more than her sister," he said. "There's no doubt the Pippa Middleton wave will result in something. What the thing is, I don't know."

"Crazy About Pippa" is scheduled to air Aug. 9 at 9 p.m. ET/PT on TLC.