'My beautiful boy! Kim Kardashian celebrates Saint's second birthday by sharing new advent calendar picture

She's about to expand her family with the addition of a third child.

But for now little Saint is still Kim Kardashian's baby - a fact she celebrated as she marked his second birthday on Tuesday.

Sharing a picture of the toddler as part of her photographic advent calender, she wrote: 'DAY 4- HAPPY BIRTHDAY to my beautiful boy Saint! I love you so much!!!'

'My beautiful boy! Kim Kardashian celebrates Saint's second birthday with advent calendar picture of the toddler wearing a pair of jeans and carrying a silk-wrapped gift

'My beautiful boy! Kim Kardashian celebrates Saint's second birthday with advent calendar picture of the toddler wearing a pair of jeans and carrying a silk-wrapped gift

The toddler stands against a white background wearing a pair of jeans, in the shot by?Eli Linnetz. ?Later, presumably realizing Saint's birthday was actually December 5, Kim deleted the image and reposted it with the caption corrected to read 'Day 5'.

For the past several days the 37-year-old and her mother and siblings have been sharing the images as a countdown to Christmas, replacing their family holiday card.

Kim's daughter North featured alongside her brother in Monday's shot.?

The four-year-old matched her glamorous mother in a stylish white tank top and jeans, while little Saint played in a huge pile of presents, as the youngest members of the Kardashian clan posed.?

Happy gals: Kim's children North (above) and Saint West took centre stage in the next preview shots for the Kardashian ?advent card, shared to Instagram on Monday

Happy gals: Kim's children North (above) and Saint West took centre stage in the next preview shots for the Kardashian ?advent card, shared to Instagram on Monday

Turning away from the traditional Christmas symbols, the card instead followed a more vintage vibe - with Kim and her kids all clad in matching blue jeans.

The sweet four-year-old girl proved to be following in her mother's fashionable footsteps in a cute denim jacket and white tank top, as she beamed widely beside Kim - clad in a similar ensemble.?

Saint was seen surrounded by a huge pile of presents, as he turns towards the camera ?- with excitement clear to see on his face.

Sweet:?Four-year-old North adorably matched her glamorous mother in a stylish white tank top and jeans, while little Saint, two, played in a huge pile of presents (above)?

Sweet:?Four-year-old North adorably matched her glamorous mother in a stylish white tank top and jeans, while little Saint, two, played in a huge pile of presents (above)?

Another clue!?Kim, 37, shared a photo of her youngest nephew Reign Disick, two, on her Twitter with the caption: 'Day 3'

Another clue!?Kim, 37, shared a photo of her youngest nephew Reign Disick, two, on her Twitter with the caption: 'Day 3'

The day before Kim had shared a photo of her youngest nephew Reign on her?Twitter with the caption: 'Day 3'.

In the photo of Reign, the toddler appears to be missing his shirt as he stand in front of a pure white background.?

In another image, the lower half of Kim's body was seen stood behind daughter North, who looked up at her mum adoringly.

Baby girl: Ms ?Kardashian posted on Saturday a teaser from her family Christmas card

Baby girl: Ms ?Kardashian posted on Saturday a teaser from her family Christmas card

The little girl had rid herself of the jean jacket for the second shot, and let her long, brown curls cascade down her back as she playfully posed for the shoot.?

Next to Kim was a woman with ripped abs and long black hair; that was likely sister Kourtney, 38.

Her caption again, simply read, 'DAY 2.'??

The theme looks almost retro with the white tops and jeans, but knowing Kim, it will be jazzed up in some way if their past Christmas cards are anything to go by.

The 2012 edition saw the family all clad in matching white, as they cheered champagne glasses together while confetti fell around them.??

So five years ago: The family Christmas card in 2012 featured Bruce Jenner, Lamar Odom and Scott Disick

So five years ago: The family Christmas card in 2012 featured Bruce Jenner, Lamar Odom and Scott Disick

One of their more bizarre shoots: In 2013 they were spread out for a weird image

One of their more bizarre shoots: In 2013 they were spread out for a weird image

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