Kate Beckinsale's Underpants Photo Dubbed A Masterpiece By Instagram

Kate Beckinsale/Instagram

Kate Beckinsale gave her daughter Lily Mo Sheen full credit for an Instagram underpants photo that straight-up saw fans duped into thinking a "professional artist" was behind it. The 46-year-old actress, currently making headlines for a new "toy boy" relationship with 22-year-old musician Goody Grace, recently posted a Calvin Klein underwear photo that's hanging up on her wall. Daughter Lily Mo, 21, was behind it all – keep scrolling for the reactions, plus Kate's clap-back over Goody Grace.

The "Underworld" actress, being British, did find herself needing to explain the 3rd grade to aU.K.-based fans, though.

Kate Beckinsale/Instagram

Seen below, Kate's photo showed her home wall – a black-framed and hanging art piece displaying a painted white pair of Calvin Klein briefs came with childlike aspects, something that Kate confirmed to be the status quo in her caption. Cat Willow was also given a shout-out as Kate wrote:

"By the way Willow’s room of her own is very much modelled on mine. For anyone wondering about the underpants picture, this is in my hallway. @lily_sheen made it in 3rd grade and it’s one of my favourite things. Plus a couple of quite wanky art people have been quite hmm I like that piece ish about it which is chuckles."

Kate Beckinsale/Instagram

Currently sitting at over 42,000 likes, the update appeared a hit, also bringing in a giant wave of comments. By and large, Instagram seemed sold – UCLA lab school student and training orthodontist daughter Lily Sheen was dubbed an artist.

"This is amazing!! ???????? We love it! ??," one fan wrote.

"I really like it. I thought it was by a professional artist too," another said.

Not everyone was on-board, though: "What’s 3rd grade in English? Is that a thing over here now?" was one question, with one fan replying: "About 8 years old" – Kate swooped in, writing: "Nooo younger."

Kate Beckinsale/Instagram

High praise for 21-year-old Lily as a comment read: "Fabulous underpants! ????I can’t believe that is Lily’s artwork I thought you bought it at a gallery!!! It’s fab fab fab ???."

Gunnar Peterson, who trains both Kate and the likes of Khloe Kardashian, replied: "Love it. And you know I do @katebeckinsale." Click here for Kate's mind-blowing workouts.

Replies from Kate have been less fluffy of late, though. After the Brit was spotted holding hands with Canadian music face Goody Grace – less than half her age – the actress clapped back.

Kate Beckinsale/Instagram

"Try and see if your new tom boy will adhere," a fan had written – interpreted to be a typo of "tom boy." Kate, who famously dated 26-year-old SNL comedian Pete Davidson following his split from singer Ariana Grande, swooped right in, writing:

"Try and see if you can spell and not just goon yourself straight out the gate."

Kate's reputation for dating younger men is also backed by her romance histories with 21-year-old Matt Rife, plus 30-year-old British comedian Jack Whitehall. Goody Grace is one year older than Kate's daughter.