The savvy Royal WAG, 23, ditched couture in favour of a credit-crunch busting bargain.
Chelsy told the News of the World: "I wish I could say it cost £100,000 but it didn't. It was around £20. I'm not good at shopping for clothes, I rarely go."
And we found one just like it even CHEAPER at Dorothy Perkins. The black shoulder- padded mini-dress sells for just £14 on the firm's website.
The on-off girlfriend of Prince Harry still managed to steal the show at the Chinawhite party in central London.
Also there were Princess Beatrice, who wore a red apron over a blue miniskirt, Natalie Imbruglia, Noel Gallagher and Jo Wood. Chelsy's get-up got the thumbs-up from our Fabulous magazine fashion editor Lynne McKenna, who said: "With her girl-next-door looks, Chelsy's little black dress is simple, yet effective.
"And the price proves that you can be sophisticated and chic whatever you spend. By keeping the arm-length long, it's a very classy look and perfect for the party season."
Perhaps Chelsy has been learning how to budget from student pals at London College of Law, where she is studying legal practice.
But she told us: "I'm finding my course really hard. Everyone seems to be so much better at it than I am, and they all find it easy. I'm finding it difficult."

Chelsy then had a cosy chat with her ex, property owner Dan Philipson, 33, before kissing him on the cheek.
Meanwhile Harry, 25, was enjoying a break in Botswana.
Bet he didn't pick up his safari gear in Topman .
________
LOOKING FOR A FASHION BARGAIN? Get 15% off at Debenhams or 2.5% cashback at Dorothy Perkins with Captain Cash, plus there's £5 cashback when you join for free. Go to www.captaincash.co.uk
________
WIN A DRESS LIKE CHELSY'S
LIKE the frock? We've got ten to give away. Just answer this: Which royal has Chelsy dated? Email your answer and contact details to comp@notw.co.uk with 'Chelsy' in the subject line, by 11.59pm on Thursday. Winners chosen at random.
Please note: All comments are moderated.
Tick this box to accept our
TERMS & CONDITIONS
This article has 17 comments
Chelsy is obviously very bright and is her own person. Good for her. If she can look that good in a 20-quid dress, then there's hope for the rest of us. Also, to everyone criticing her, if your class is indicated by your grammar and spelling, she's miles ahead of you.
By Katee.. Posted November 15 2009 at 12:05 AM.
i love this dress ,and would look fab for xmas partys and stuff ,i actually want one and for 20quid it looks good on her and a real bargain ,shows u dont need money to glam up i wanna know which high chain store so i can get one in time for xmas i think its great that she looks good init hence the price
By emma lee.. Posted October 30 2009 at 2:20 PM.
As a Yank..my observation is the young lady does not have the grace and style of what his lovely mother Princess Diana had. I mean over here everyone was so impressed with Diana's grace and demureness. She was a trend setter and era of class..Come on, there is no way that anyone over here would follow after this one. She looks no different than some of the girls are eager to meet Mr. Right at a club on a Saturday night all tarted up.
By Denise.. Posted October 30 2009 at 3:26 AM.
how is she a chav just because shes brought a £20 dress? i don't see chavs going to a top law university. get a grip on your lives, she is wearing exactly the same kind of clothes as everyone else in her age range. you can't expect her to dress like a middle aged woman when she is young and is out to have fun. if she dressed up poshly to go out clubbing she would look ridiculous.
By louise.. Posted October 29 2009 at 7:10 PM.
I love Chelsy, she's young, beautiful, personable, smart, ambitious and has her own life aside from Harry. Kate Middleton should take a lead from her and grow up. Kate will never be Queen, it's sad to look at her just waiting around. She should move on while she still has a bit of dignity left. On the other hand, the Windsor's would be lucky to have Chelsy.
By Ali.. Posted October 27 2009 at 8:34 PM.
teresa, sorry but Harry is not a disgrace to the Royal Family and if I understand correctly the other posts, no you dont have to buy cheap dress to be chav, you are or you dont. Chelsy can buy expensive clothes, she'll stay chav with no class, because she has no class. The way she does her make up is chav, the way she dress,the way she behave.. remember the facebook photos, her laugh (what a drama) Doesnt want to be bother by the press? Ok so leave the clubs and the paparazzi behind you.
By Maggie.. Posted October 26 2009 at 6:21 PM.
Isabella and Rosa
what's the problem with Chelsy buying a cheap dress, so what you mean is that people who buy cheap are CHAVs.
You say she can do better than harry but harry himself has proven to be such a disgrace to the royal family.
By teresa.. Posted October 26 2009 at 7:20 AM.
and she spoke to the press... that means she is NOT back with Harry. GOOD NEWS! she'is not good looking any more and the Royal Family is far to good for her (compare with princess Diana or Letizia of Spain). NO NEED THIS CHAV.
"I wish I could say it cost £100,000 but it didn't." Really stupid and unclever comment!
By Isabella.. Posted October 26 2009 at 6:09 AM.
She is no more beautiful. And agree with the one who said she has no class. You can be educated and have no class at all. She dresses awfully (what is this dress? did she borrows it to Jordan?)
The royal family don't need a girl like Chelsy, Harry can do so much better. Make an effort Harry please!
By Rosa.. Posted October 26 2009 at 6:01 AM.
She's smart, conservative and beautiful! I love her and hope Harry is smart and doesn't lose her! She's classy as hell. Being a bargain shopper is being a smart shopper not WAG or CHAV.
By something special.. Posted October 25 2009 at 6:41 PM.
What a delightful girl she is. The Windsors don't deserve her.
She could do so much better than Horrid Harry.
By GeGeK.. Posted October 25 2009 at 3:53 PM.
Princes Chav with a first class honours degree and a masters from a top university. That's uber chav. You always see them down at my local Weatherspoons boozing and fighting in their cap and gowns.
By Sally.. Posted October 25 2009 at 3:11 PM.
I'm sure Chelsy is a lovely go but she just screams "Princess Chav"!!!
By Sally.. Posted October 25 2009 at 1:36 PM.
Carol, your ramblings don't even make sense. There's absolutely nothing wrong with her and she dresses and acts like any other girl her age, what's wrong with that? You say she has no class but Harry himself has hardly acted like a stereotype heir to the throne over recent years himself. Times change Carol, get used to it. If you want our future monarchs to act and be like Queen Victoria then you are out of touch and frankly a bit cuckoo. Cuckoo Cuckoo.
By Rob.. Posted October 25 2009 at 9:12 AM.
what an hypocrite, you're right Lisa. I dislike the girl, she has no class, just look at her! you can be not too conservative and not look like a chav. No difference between her and the WAG now. I'm really disappointed in this girL She was smart. NO MORE
By Carol.. Posted October 25 2009 at 6:28 AM.
Guess there isn't too much left in the kitty after her father splashed out on a nearly £2 million flat for her earlier this year.
By Lisa.. Posted October 25 2009 at 4:58 AM.
I love Chelsy. She's smart, she's successful, she's good looking and she always dresses fabulously. I have a sneaking suspicion she's far to good for the royal family. But I like Harry too, so I'll let them off..
By Sally.. Posted October 25 2009 at 12:50 AM.