Dolce & Gabbana co-designer Stefano Gabbana seems to love nothing more than an Instagram feud — but this time, at least, he's getting the last word thanks to the power of his fashion label.

Back in October, Gabbana, 55, got into a social media tiff with the Instagram account Diet Prada, which claims to point out when people rip each other off in the fashion world. Diet Prada accused Dolce & Gabbana of copying Gucci with a fashion display set-up, which Gabbana denied before demanding an apology.

Now his label is selling pricey T-shirts quoting his Instagram comment, taking a major dig at Diet Prada — while seemingly earning a profit off the feud.

Fashion statement: Dolce & Gabbana is currently selling a T-shirt that reads: '#Please say sorry 2 me'

Take that! The shirt, which includes a cheeky smiley face, is furthering a feud that designer Stefano Gabbana has with the Instagram account Diet Prada

Similar: In October, Diet Prada shared comparisons of a Dolce & Gabbana collection (bottom) with a previous Gucci collection (top)

The original Diet Prada post included two pictures. The first showed a display for the Gucci Ghost collaboration that Gucci did with Trouble Andrew. The wall in the picture is covered with doodles, while the high-price fashion is perched in front.

The second picture was from a later staging of a Dolce & Gabbana collection, which also featured a doodle-covered wall behind the designs.

The set-ups certainly look similar, and Diet Prada called out Dolce & Gabbana for being a 'copycat'.

'D&G GHOST! @dolcegabbana takes a stab at the high-low aesthetics of @troubleandrew and @gucci 's GUCCI GHOST collab,' the account wrote.

Diet Prada is known for these types of comparison posts, and has accused Dolce & Gabbana of similar things in the past. The account has also taken on dozens of other brands, including DSQUARED2, Yeezy, Richard Quinn, Philipp Plein, and Alexander Wang.

Most brands don't bother to respond — but considering Gabbana's track record for insulting people in Instagram comments, it's no surprise that he went after the account.

He was soon in the comments section of this post, calling out people who critisized him as 'idiots'.

Caught: The account accused Dolce & Gabbana of copying Gucci

Baiting: Gabbana got quite angry and left rude comments for critics, writing: 'I love my haters be cause make me more famous and powerful [sic]

Brutal: The designer, who owns label Dolce & Gabbana with Domenico Dolce, also made controversial statements about same-sex families in 2015

According to Harper's Bazaar, he also called out Diet Prada directly, writing: 'Darling, I make this job from 32 years, we made all this world in the '90…. so, if you are ignorante is much better for you don't say anythyng about this image… Gucci copy us in many different way!!! This is one of… please say sorry to me!! [sic]'

Diet Prada responded: '@stefanogabbana I think your visual display team should say sorry to you!'

Nasty: He also called the account 'ignorant' and demanded an apology — the wording of which ended up on the new T-shirt

Gabbana came back again, writing, '@diet_prada dear you need to take fashion lesson in some school before to speak ... information is the top in fashion history,' to which Diet Prada shot back: '@stefanogabbana we have…there wasn't much written about DG unfortunately.'

Gabbana has since deleted some of those comments, though he left several other ones mocking Diet Prada.

Clearly not satisfied with the direction of the Instagram war, he then decided to play the long game with his own comeback. He took part of his original retort and had it printed on a T-shirt, which is available to buy now as part of the latest collection.

'#Please say sorry 2 me,' reads the $481 white tee, which also has a hand-drawn smiley face and is on sale at Farfetch.com.

Beauty in red: This month, The Catwalk Italia shared five pictures of Selena Gomez, 25, rocking red dresses. Pictured far right is Selena in Gabbana's design

Controversial: Gabbana commented on the photo, calling the famous singer 'so ugly'

Sultry: Gabbana targeted supermodel Kate Moss on the same Instagram account earlier in the week

Jealous? While many praised the mode's 'stunning' ensemble, Gabbana simply wrote: 'No'

This appears to be the first time that Gabbana has using one of his feuds as inspiration for one of his designs, despite the fact that he has had quite a few of these feuds.

Recently, he angered thousands of Selena Gomez fans when he made a nasty remark about her online.

The controversial designer commented on a post by The Catwalk Italia, which asked its 1.4 million followers to pick their favorite image of 25-year-old Selena from a selection of five.

Though one of the dresses was a Dolce & Gabbana design, Gabbana didn't praise that one, and instead wrote, 'She's so ugly!!!' Diet Prada pointed out the insult in its own Instagram stories.

Earlier that same week, Gabbana also commented on a picture of Kate Moss in another post from The Catwalk Italia. The account shared pictures of the 44-year-old model wearing a $4,007 playsuit and asked whether it deserved a thumb up or a thumb down.

While many praised her 'stunning' ensemble, Gabbana simply wrote: 'No.'