Katie Hopkins has branded Lily Allen "hideous" in pregnancy.
The controversial TV star unleashed her claws on the 'Air Balloon' singer during an interview with heat magazine, claiming that becoming a mother involved the star "gaining two stone and looking pretty hideous".
Lily - who has daughters Ethel, three, and one-year-old Marnie with her husband Sam Cooper - was quick to retaliate, criticising Katie for placing so much emphasis on people's looks and explaining that she found comfort in food after tragically miscarrying her first child.
The singer wrote in an impassioned Twitter rant: "Yes, after tragically losing a child so late in my pregnancy I may have gained a few pounds, I am one of the many that find comfort in food.
"The two pregnancies that followed were terrifying because of what had happened before and I was pretty much on bed rest for 20 months.
"I wasn't exercising because I didn't want to take any risks, and funnily enough, the survival of my children felt more important than being thin.
"Can somebody tell me what Katie Hopkins does except go on telly slagging off girls half her age? PS Katie looks are obviously so important to you. There's always plastic surgery ya know. Maybe they could sew your mouth up while they fix the rest of you. (sic)"
However, it seems Lily had a change of heart as she has since deleted her tweets.
She added: "Sorry about that, but my babies are a touchy subject and I gave her exactly what she wanted by responding. I am now going to delete it all."
Katie also slammed "purple-headed dwarf" Kelly Osbourne and 'The Only Way Is Essex' star Gemma Collins, who she cruelly joked had received a "contributions to fat people" award at the National Television Awards earlier this month.

Duchess Catherine and Prince George have returned home from their holiday in Mustique.
Duchess of Cambridge - known as Kate Middleton before she wed Prince William - and her sixth-month-old son joined her family on the Caribbean island to celebrate her mother Carole Middleton's 59th birthday which falls on January 31 last week.
Since then Catherine and George have been reunited with William who stayed in the UK where he is currently doing a 10-week agriculture course at Cambridge University.
A source told the Daily Mirror newspaper: "They enjoyed their break immensely but of course they missed having William with them.
"He will be very glad to have them home, a week away from your baby is a long time and of course he will have missed little George."
The Middletons, who also include Catherine's father Michael, brother James and sister Pippa, will no doubt have been spoiling the newest member of the family on the luxury trip.
Catherine was previously spotted disembarking from a Boeing 777 plane on her way to the luxury island while she carried a wriggling baby George in her arms, and appeared to have escaped her fellow passengers' attention.
A source said: "Kate left the plane carrying her son like any other proud new mother. Everyone in her party had huge smiles on their faces as they walked across the tarmac to take a second, smaller plane, which took them on to Mustique.
"There were lots of other tourists surrounding them, but the Duchess and her little boy escaped their attention."

Britain's Prince Charles will visit Somerset today (04.02.14).
The 65-year-old royal will meet residents in the village of Muchelney and Langport in Somerset Levels, South West England who have been dealing with the devastating consequences of floods which have affected their homes and businesses.
Charles' is conducting the visit as patron of the Prince's Countryside Fund - an organisation which supports rural projects and offers funds during a crisis - and it is hoped his stay will give the locals the chance "to make their views very, very clear".
Sky News's royal correspondent Paul Harrison said: "They [the flood victims] feel as though their voices aren't being heard. With Charles here today, that will give them a chance to make their views very, very clear.
"We'll see him by hook or by crook with the help of a 4x4 and a boat seeing people who've been cut off.
"These will be very public moments with people because they will be on camera but what we do know is that Prince Charles will also be doing private visits."
The Prince of Wales' trip comes after head of the Environment Agency (EA) admitted they hadn't done as much as they "should have" to deal with the flooding.
Lord Smith told Sky News: "We probably haven't done as much as we should have done up to now and I regret that - but we've had very difficult choices to make."

P Diddy looked every inch the superstar as he performed at the Time Warner Center in New York during the Super Bowl celebrations over the weekend.

Mary J Blige opted for natural make-up and a side swept fringe at the Bootsy Bellows Super Bowl celebration at the Liquid Cellar in New York. The singer finished off her look with a burgundy leather jacket and statement earrings.

Drake held hands with a lucky fan during a performance at the REVOLT Brings the Music Revolution event at the Time Warner Center in New York. The rapper teamed his all white ensemble with a black hat as he hit the stage.

Ashley Benson opted for a black biker jacket and jeans as she shopped at the Fred Segal boutique in Hollywood. The actress added a splash of colour to her look with a red beanie and checked shirt tied around her waist.

Alyson Hannigan looked calm as she made her way to a tattoo removal store in Hollywood. The 'How I Met Your Mother Star' was surprisingly cheerful as she chatted on the phone prior to the painful procedure.

Sharon Stone looked stressed after waiting in line at a homeware store in West Hollywood. The actress sported a casual knitted skirt and black jacket as she shopped for tiles.

A cheerful Selena Gomez left the Ventura Court Theatre in Studio City, Los Angeles. The 'Spring Breakers' actress looked pretty in a white sweater, jeans and sunglasses as she jumped into her car.

Kelly Brook soaked up the sun during a bike ride in Miami. The model looked cute in a pale blue playsuit, hat and shades as she cycled by the beach.

Dannii Minogue looked pretty in a brightly patterned playsuit as she strolled around Melbourne, Australia. The star wrapped up in a black cardigan and wore a white scarf around her neck to beat the breezy weather.