On her Facebook page, Ms Priscilla Chan writes that she is a "simple creature" and, so far, her low-key profile has proven her words to be true.

Even the 100-odd guests at her wedding - a private ceremony held in Palo Alto, California - were kept in the dark, thinking that they were attending her graduation party.

Along with hubby Mark Zuckerberg, Ms Chan yesterday updated her relationship status to "married" on her Facebook page, where her life event, "married Mark Zuckerberg", had close to 20,000 likes as of press time. On Mr Zuckerberg's page, the number of "likes" was more than 700,000.

The new "Mrs Facebook" loves "cooking and soft things".

And she likes "the food network, warm places, sun-dried tomatoes and diet a&w", the tens of thousands of people who went to her page yesterday read.

Their updates also attracted hundreds of comments, the majority of which were congratulations from friends and well- wishers.

But coming right a day right after Facebook's historic initial public offering, the news also triggered some unsolicited advice on pre-nuptial agreements, such as from real-estate mogul Donald Trump, who tweeted: "Mark Zuckerberg - get a pre-nup." 

Priscilla inspired organ-donor feature on Facebook

But, from what little that is known of Ms Chan, she's not likely to be riding on the coat- tails of Mr Zuckerberg, tech billionaire or not.

Last Monday, she obtained her medical degree from the University of California (UC), San Francisco, moving closer to her goal of becoming a paediatrician.

Her medical ambitions have also influenced Mr Zuckerberg, inspiring him to add an organ-donor feature to Facebook, which aims to ease the process of organ donation.

Over dinner, Ms Chan often told stories about patients she met "getting sicker as they don't have the organ that they need".

That resonated with Mr Zuckerberg, who launched the new feature on Facebook on May 1. She's also not a pushover.

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