The piece, which was commissioned by the British magazine for its July 2024 issue, showed Kate wearing the famed Lover's Knot tiara and a white caped gown from Jenny Packham while standing in front of a blue gradiant background.
Pearl earrings similar to a set that once belonged to Princess Diana were included in the artwork, as were Kate's sapphire engagement ring from husband Prince William, her Royal Family Order brooch and a large blue sash signifying her position Dame Grand Cross of the Royal Victorian Order.
"It looks NOTHING like her," one Instagram user commented under the cover, while another wrote, "I really respect the artist but I also don't see Catherine here."
Meanwhile, a third commenter noted that Kate "NEVER looks that uptight or tense in her arms or shoulders," though they did appreciate "how delicate and realistic the dress looks below the bodice."
However, there were also fans of the painting, with one calling it "so lovely" in the comments.
"It's a beautiful artistic expression of poise and grace," another user added. "Well done!"
The release of Kate's painting came days after her father-in-law Charles unveiled his latest royal portrait, which showed him in a red uniform of the Welsh Guards that almost seamlessly blended in with the crimson background.
"I'm sorry but his portrait looks like he's in hell," one critic quipped in a May 14 post shared on the royal family's Instagram page. Meanwhile, another thought the painting was of a "floating head in a sea of red."
"I don't get a good feeling from viewing this portrait at all," a third user remarked. "Apologies to the artist, but it's not pleasant to look at."
E! News has reached out to Tatler, as well as artists Hannah and Jonathan, for comment but hasn't heard back.
For more royal news, keep reading.
Kate Middleton Focusing on Health
New Role for Prince William
Kin Charles III Returns to Public Duties
Queen Camilla Attends Royal Maundy Service
Kate Middleton Shares Cancer Diagnosis
Kate Middleton Apologizes for Edited Family Photo Controversy
Lady Kitty Spencer Privately Welcomes Baby
Queen Camilla Takes a Break
Thomas Kensington Dies at 45
King Charles Diagnosed With Cancer
Sarah Ferguson Is Diagnosed With a Second Type of Cancer
Queen Margrethe II of Denmark Abdicates the Throne
Kate Middleton Is Hospitalized
Prince William Adjusting His Schedule
King Charles III Undergoing Treatment
Luxembourg Welcomes a New Baby
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