Chanel designer Karl Lagerfeld shouldn’t expect any thank you notes from Pippa Middleton any time soon.

In an article published on July 31 in the British daily tabloid The Sun, the 78-year-old fashion icon took a catty swipe at the younger sister of the Duchess of Cambridge, saying that Middleton “struggles” with her looks.

Lagerfeld also revealed that he did not like Middleton’s face, and recommended that she “only show her back” to the world.

The 28-year-old English socialite made headlines in April of 2011, thanks to a body-hugging dress she wore to the wedding of Prince William and Kate Middleton at London’s Westminster Abbey.

Designed by Sarah Burton of Alexander McQueen, the simple ivory dress was highly praised in the media -- as was Middleton’s taut backside, which was globally admired as she served as maid of honour at the royal wedding.

Since then, the partying Middleton sister has continued to appear in the tabloids.

Middleton also found herself embroiled in controversy in April of 2012, after she was photographed in Paris accompanied by a male companion who pointed a gun at the photographer.

Even so, Lagerfeld’s harsh remarks about party girl Pippa are not the first to stir up trouble for the Chanel designer in 2012.

Earlier in February, Lagerfeld called the Grammy-winner British singer Adele “too fat” in the publication, Metro.

Lagerfeld later issued an apology to the 24-year-old singer. However, that did not stop Adele from responding to Lagerfeld’s digs in People magazine.

“I’ve never wanted to look like models on the cover of magazines,” the singer told People.

“I represent the majority of women and I’m proud of that,” she said.

In 2009, Lagerfeld also took aim at multi-millionaire model Heidi Klum, calling her “too heavy” and too big busted to strut the top catwalks of the world.

Lagerfled also prompted a public outrage in 2009 when he made derogatory remarks about fuller-figured women.

“No one wants to see curvy women,” the fashion expert told the world.

“You’ve got fat mothers with their bags of chips sitting in front of the television and saying that thin models are ugly,” Lagerfeld added.

Perhaps such harsh remarks stemmed from Lagerfeld’s own battles to be thin?

In 2001, the designer lost more than 92 pounds in 13 months, driven, so he has said, but by a desire to dress differently. The designer’s weight loss plan was also featured in the book called “The Karl Lagerfeld Diet.”

However, taking aim at Middleton’s face has put Lagerfeld and his opinions in the spotlight yet again, and not always in the most favourable of terms.

Middleton, unlike Adele, has yet to acknowledge Lagerfeld’s harsh criticisms or his praises for big sister Catherine.

Lagerfeld described the Duchess of Cambridge as a romantic beauty with a “nice silhouette.”

Whether the world agrees with him or not, Lagerfeld’s scathing remarks about Middleton have earned mixed reactions on Twitter.

“‘She should only show her back.’…I agree lol,” tweeted @ceoents.

Others, also, were surprised at Lagerfeld’s emphasis on Middleton’s face.

“I don't like PippaMiddleton's face." - KarlLagerfeld. Thus becoming the first man to realize she has one,” tweeted @BenedictFarse.

Others, too, chose to give Lagerfeld a taste of his own medicine in their remarks.

“I read that KarlLagerfeld says we should only see Pippa Middleton's back not her face. What? Um, has he seen himself?” tweeted @trendyredmac.