Kourtney Kardashian kicked off Halloween weekend by revealing her epic Halloween costume that involved transforming into her sister Kim.

The POOSH founder, 44 showed off her baby bump in the same skintight floral Riccardo Tisci that Kim, 43, famously wore to the 2013 Met Gala while heavily pregnant with her daughter North West, now 10.

The SKIMS CEO’s look was absolutely savaged online, with many ruthlessly comparing her to grandma-worthy couch as well as Robin Williams’ character from the film Mrs. Doubtfire.

Kim, who attended the event for the first time with her then-husband Kanye West, previously confessed to Vogue that she cried ‘the whole way home’ once she caught wind of the endless memes and jokes that were circulating about her.

In her photos shared Friday, Kourtney looked nearly identical to Kim as she slipped into the controversial dress and the matching heels Kim wore.

Kourtney — who is expecting her first child with husband Travis Barker, 47 — even copied the star’s exact hair and makeup, which included a bold berry lip and a sleek low ponytail.

‘Freaky Friday,’ captioned Kourtney, in reference to the film of the same name that follows a mother and daughter who switch bodies after accidentally conjuring a spell.

She mimicked Kim’s red carpet poses, which mostly included the mother-of-four placing her hand on her belly and sticking her leg out of the dress’ dramatic slit.

Kim has yet to react to her older sister’s costume.

Earlier this week, the Kardashian-Jenner clan gave their fans a look at the Halloween decor inside their respective mansions in Hidden Hills and Calabasas.

Kourtney went all out making the most of the mega mansion she shares with husband Travis and their kids.

She had skeletons at a table, tons of candelabras and white pumpkins lined up in the hallways.

There were green pumpkins outside.

Kim recently revealed Kourtney is on bed rest as she prepares to welcome her new baby.

The reality TV star turned 43 on Saturday and celebrated with a family party involving her mum Kris Jenner, and sisters Khloe Kardashian, Kendall Jenner and Kylie Jenner, but mum-of-three Kourtney was notably absent and Kim has now explained why.

In a post on Instagram, Kim wrote: ‘So blessed to have hit the jackpot of friends! I couldn’t have ever dreamed I would be so lucky to call these girls my friends.

‘Thank you for all the birthday love. And Kourt I’m jumping in bed with you next week for our bed rest picnic.’

Other guests at the bash included Hailey Bieber, Sara Foster and Olivia Pierson.

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Kourtney’s due date is believed to be in the coming weeks as she nears the end of her pregnancy.

She previously suffered a terrifying health scare when she was admitted to hospital to undergo emergency surgery to save the baby’s life. No more details about her current condition have been revealed.

However, ‘The Kardashians’ star Kourtney did acknowledge Kim’s birthday in a post on Instagram in which she insisted their TV fights aren’t really that bad.

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In a post on her Instagram Stories, Kourtney wrote: ‘Happy happy birthday to my first sister @kimkardashian! ‘Thank you for all those years of bossing you around and you actually listening to all my crazy ideas.’

Addressing their most recent squabbling, she added: ‘People think the fights they’ve seen on tv are bad … if only they got to witness the hair pulling, nail digging ones from early high school.

‘The joys of sisterhood. I love you deeply forever and always. May God bless this year with love and happiness and abundant joy.’