Battle of the rears according to Dailymail UK.

Seriously this is so sick. Dailymail UK is having fun by presenting this battle of the rears. I thought I should share. Enjoy, however I don't know what Pippa Middleton is doing in this list.

1.  COCO AUSTIN (waist 23, hips 40- RATIO: 1.74 )

Rapper Ice T’s wife Coco Austin comes in top, with an impressive 17 inch difference between her waist and her hips.

In a 2013 interview on The Real, the voluptuous star squashed rumors that she was the owner of butt implants, insisting her famous rear was '100 per cent real'.

Wowzer! Coco Austin's '100 per cent real' buttocks come in at a close second

Continue after the cut...

2.  NICKI MINAJ (waist 26, hips 45 - RATIO: 1.73)

Nabbing the second spot on our list is the loud and proud Nicki Minaj. 

Speaking about her famous behind on MTV back in 2011, the star said: ‘I don’t mind the questions, I don’t mind the fascination. It’s all good.'

She added: 'I mean…but I’ve said this before, it doesn’t define me. So, I try my best not to focus my energy on it.

‘You know, people are sitting in the barbershop talking about my butt, it’s conversational. That’s what people are gonna do.’

Star quality: Nicki Minaj, owner of one of the biggest celebrity bottoms, also enjoys a wide waist-to-hip ratio, with a teeny tiny waist and a perfectly rounded backside

3.  IGGY AZALEA (waist 23, hips 37 - RATIO: 1.61)

This 23-year-old Australian songstress was recently bigged up by her 'baller' boyfriend, Los Angeles Lakers star Nick Young, who proclaimed his love for her bottom as they walked down the street in LA.

The devoted Mr Young said, according to TMZ: 'You see all of this, you see all this? This is what I'm on, man - I'm the star - you see what I'm going into this car with? What I'm gonna do with this a** shouldn't be legal.'

Cheeky: Australian songstress Iggy Azalea's biggest butt fan is her boyfriend, Los Angeles Lakers star Nick Young

4.  KIM KARDASHIAN  (waist 26, hips 40 - RATIO: 1.54)

This 33-year-old reality star was so keen to prove she was the real deal, she once had an X-ray on live TV to prove she hadn’t had implants, and took to Twitter earlier this year to rant about the conversation.

She said: ‘I'm seeing all these nonsense tabloids claiming I have butt implants-injections. Get a life! Using pics of me 15lbs skinnier (before I had my baby) comparing to me now! I still have weight to lose.’

And Kim’s all-natural rear is often celebrated by her fiancé Kanye West, whose latest rap with Future called I Won talks about ‘dipping that ass in gold'.

Baby got back: Kim Kardashian drew widespread attention when she posted this 'belfie' - a bottom selfie - onto her social media accounts, showing off her plump derriere

5.  BEYONCE (waist 26, hips 40- RATIO: 1.54)

Technically an even tie with Kim Kardashian, Bootylicious singer Beyoncé is so proud of her bottom she sings about it.

The 32-year-old, refers to her behind as ‘fatty’ in her hit single Drunk In Love, and back in 2009 she told MTV she runs up and down the stairs to keep her bottom in shape.

She said: ‘I guess my butt is natural. But I go through stages like every woman. I like being curvy but sometimes I get curvy in the wrong places.

‘After New Year I do stairs - they are the best thing for butt cheeks. Every January I'll start working out. I'll do that for three months and then stop again!’

Steamy: Beyonce fondly refers to her voluptuous bottom as 'fatty' and says running up and down stairs is the best thing for keeping it firm

6.  BLAC CHYNA (waist 27, hips 41 - RATIO: 1.52)

Kim Kardashian’s posterior is in good company, with good friend Blac Chyna; a former stripper who is now engaged to rapper Tyga.

Also the owner of a rather bumptious bottom, except that Ms Chyna's is reportedly the result of butt implants. 

Rumours flew around in January that she suffered a mishap when one of the implants flipped upside down, and she was forced to rush to her plastic surgeon to get it taken care of.

She has since been spotted hitting a Barry's Bootcamp workout class in Hollywood, with her bum BFF Ms Kardashian of course.

Professional hazard: Blac Chyna reportedly had a butt implant emergency this year, when one of them flipped upside down to form a lumpy disaster

7.  JENNIFER LOPEZ (waist 25, hips 38 - RATIO: 1.52)

The original Jenny From The Block, Jennifer Lopez comes in at number seven with her famously shapely backside. 

And the 44-year-old The Voice coach is pretty smug about her trademark rear. When once asked in an interview whose backside she most admired, she replied: 'I don't really check out other people's butts.'

Who, me? Jennifer Lopez, 44, is evidently fully satisfied with her spectacular backside

8.  AMBER ROSE (waist 25, hips 38 - RATIO: 1.52)

Model and musician Amber Rose, a former flame of booty-loving rapper Kanye West, hit the news today when she released the latest in a string of twerk videos.

The 15-second clip reveals Ms Rose twerking aggressively during a magazine shoot, which quickly amassed almost 100,000 views.

Twerk it: Amber Rose sports a slightly less impressive hip-to-waist ratio than her ex-boyfriend Kanye West's new fiance, Kim Kardashian

9.  RIHANNA (waist 24, hips 36 - RATIO: 1.5)

Umbrella star Rihanna, 26, is often seen pinching her own rear in music videos, blessed with a tiny 24 inch waist and rounded 35 inch hips.

She hasn't always felt so lucky, however. Back in 2012, the curvy singer admitted to Ryan Seacrest on Kiss FM that her bottom had suffered as a result of a recent dieting experiment.

'It's actually pretty annoying, because now I don't have a butt!' she complained. 

She was back to her former glory last May when she teasingly posted an extremely up-close-and-personal Instagram snap of her peachy derriere, just after ex-boyfriend Chris Brown's girlfriend Karrueche Tran posted a similar, more family-friendly snap of her booty. 

Denim delight: Rihanna is the proud owner of this plump bottom, which she posted to her Twitter as part of a 'butt war' with her ex-boyfriend Chris Brown's new flame

10.  PIPPA MIDDLETON (waist 23, hips 34 - RATIO: 1.48)

Pippa Middleton - Kate's younger sister - shot to worldwide fame after many found themselves admiring her perfect posterior at the royal wedding in 2011.

The 30-year-old, coined by many as 'her royal hotness', certainly has impressive stats; with a super tiny 23 inch waist with 34 inch hips giving her a near-perfect hourglass figure.

Famous bottom: Pippa Middleton shot to fame, not only because she's Kate Middleton's sister, but because her bottom looked particularly pert at the royal wedding in 2011

11.  KIMBERLEY WALSH (waist 25, hips 35 - RATIO: 1.4)

Bringing up the rear is Girls Aloud star Kimberley Walsh, again with a 10 inch difference in ratio.

Speaking to Star magazine, the singer admitted that even former band mates Cheryl Cole and Nicola Roberts can't resist copping a feel of her ample backside.

'They can’t walk past me without squeezing it! When we were on tour, it was National Smack a Bum Day and I was actually in pain by that evening!' she said.

Give it a squeeze: Girls Aloud star Kimberley Walsh admits even her former band mates can't resist her bottom

12.  KELLY BROOK (waist 25, hips 35 - RATIO: 1.4)

Coming in close to the bottom of the list, British model and curve-ambassador Kelly Brook, 34, racked up a reported 10 inch difference between her hips and waist.

The buxom star also happened to scoop the number one sport in Britain's annual 'best bum' survey this January, just ahead of runner-up Holly Willoughby.

Meow: British model and curve-ambassador Kelly Brook, 34, racked up a reported 10 inch difference between her hips and waist

13.  JESSICA BIEL (waist 26, hips 36 - RATIO: 1.38)

Last but not least, actress and wife to Justin Timberlake, Jessica Biel with a modest 10 inch difference between her tiny 26 inch waist and her 36 inch hips. 

Despite her stunning overall good looks, Ms Biel once lamented her beauty for apparently standing in the way of her getting good Hollywood parts.

'It really is a problem,' she told Allure. 'I have to be blunt.'

The cat who got the cream: Bringing up the rear of our list is the stunning Jessica Biel, who admits her gorgeous looks can actually be 'problem' for her

**What a load of junk!