Paris Hilton had the perfect birthday dress with all the accessories (she was dressed as a princess for those who didn't know, lucky souls) - a sparkling tiara, a floaty, eye-popping pink gown and glittery heels. What she apparently didn't have, typically, was underwear.
Needless to say, the thigh-high split didn't leave a lot to imagination. But then, this one is an apt birthday celebration for this particular controversy's child. Paris could be accused of excesses in lot of things but underwear is definitely not one of them.
We take a quick look at other controversies that the Hilton heiress has landed herself in ever since she flashed (pun intended) on the celeb scene with (what else) a sex tape to end all sex tapes.
The sex tape saga
The year was 2003 and Paris was to make her debut in a reality show quaintly titled The Simple Life. Not so simple was the fact that someone was peddling a sex tape starring her and now-off-now-on boyfriend Rick Salomon. Intended for the couple's eyes only, the tape found its way to some of the less salubrious tabloids and the rest, as they say, is very embarrassing history.
Run-ins with the law
In September 2006, Paris' driving licence was suspended for driving under influence (DUI). On February 2007, she was found speeding - on a suspended licence and jailed. In 2010, the socialite was arrested for possession of cocaine. Her high-powered lawyer ensured she didn't stay in jail for more than a few hours. Earlier that year, she was questioned in South Africa after her friend was suspected of smoking marijuana.
Tirade against gays
The blonde heiress had to apologise after she was heard berating gay men who have sex with strangers.
She declared: 'Gay guys are the h***iest people in the world. They're disgusting. Dude, most of them probably have AIDS... I would be so scared if I were a gay guy. You'll like, die of AIDS.'
Her comments were taped by the driver of the taxi in which she was travelling with a friend.
The Mecca controversy
In 2012, she managed to outrage Muslims for opening a store in the holy city of Mecca, Saudi Arabia. After she tweeted about the development, she was attacked on the social media. Many saw it as a reflection of how the character of the city was changing.