Kim Kardashian's latest selfie sparks cosmetic surgery rumours

Kim has kept a low profile since the birth of her son Saint in December.

However, on Sunday she eased her way back into the world of selfies and hashtags by making an appearance on sister Kourtney's Instagram feed.

The 36-year-old shared a selfie of herself and Kim in front of a bathroom mirror, dressed head-to-toe in black and posted it with the caption "Studio hoes. #SWISH"

The image got fans speculating about the Kim's face, with many suggesting that she had used to time out of the spotlight to get some work done.

"What's up with Kim's face?" wrote one commentator, while others remarked that she looked almost unrecognisable.

"Post Botox Kimmyyyy?????" added another, while many speculated that fillers or Botox had changed the mother-of-two's appearance.

Kim has long since been subject to rumours that she’s had cosmetic surgery done. Her appearance certainly looks different than it did a few years ago.

Many fans suggested she had a nose job but Kim denies the rhinoplasty rumours and says it’s down to clever shading with make-up.

She also denies that she’s had breast implants (“If I take this bra off, you will tell me I need to get them done,”she joked in an interview when questioned about it and says that her much lauded derriere is all natural and not down to bottom implants.

While there's no doubt the Armenian-American beauty has been blessed with good genes, Kim has, in the past, confessed to Botox and Fraxel treatments.

The former is a standard celebrity weapon against ageing. But Fraxel, while still a non-invasive cosmetic procedure, is slightly more hardcore.

This laser treatment works to resurface the skin, diminishing fine lines and wrinkles and giving a youthful glow.

It can be used on wrinkled and sun damaged skin as well as acne scars, freckles and on the face, hands and décolleté.

While Kim has not posted any new snaps of  herself since welcoming Saint on December 5, she has been busy updating her paid for website, using plenty of flashback snaps.

And it seems her fans may have a point, with old photos of the star showing her face looking remarkably different to Kourtney's latest Instagram post.