Kim Kardashian flaunts her 39in hips in a skintight dress

Kim Kardashian shared a new pinup image to Instagram on Thursday for her KKW Beauty fans.

The 39-year-old reality TV maven was seen in a skintight light blue minidress that revealed her hourglass figure; she has said in the past her enviable measurements are 34-26-39.

The wife of Kanye West said in the caption that her new makeup line in celebration of her 40th birthday on October 21 would be released on her big day and at the exact time she was born: 10:46 am.

‘The Opalescent Collection shades are bold, bright and spirited, and it was important that they could be versatile enough for everyday wear or to layer for a more intense glam look,’ the KUWTK standout began her caption.

‘I loved creating this collection and I can’t wait to see the looks you create with it.’

She then noted that the Opalescent Collection launches on her birthday at the exact time she was born – Wednesday, 10.21 at 10:46AM PT.

Kim has been seen in several images already from the campaign which features a large birthday cake.   

The reality queen proved she was her own gift to the world while climbing out of a cake in a barely-there silver bikini in some sultry Instagram stories.

In another shot the bombshell got a bit messy, wrapping her arm around an elegant birthday cake as she donned a skintight, baby blue sweater with a high neck.

Kim modeled caramel highlighted locks in the first photos, where she posed with a giant faux birthday cake in a a sexy silver bikini which tried its hardest to hold in her bust.

Continuing to turn up the heat, she was seen donning sheer metallic bottoms and clear platform heels in a followup shot while she crouched down and let her hair cascade down to elegantly mask her modesty.

Since her makeup collection was the focus, Kim went all out with shimmering, jewel-toned eyelids and plump lips.

But of course her signature contour was the most eye-catching, bringing pure drama to her already photogenic face.

Kim wasn’t shy about starting the celebrations early.

Earlier in the day she shared some stunning shots in a shimmering pink patent leather corset and matching pants to mark the occasion. 

Looking ultra glam in a magenta bustier top and pants the E! personality revealed her excitement at the range which is designed around her birthstone, opal.

Kim wrote in the caption, ‘In celebration of my 40th birthday, I am so excited to announce @kkwbeauty’s The Opalescent Collection, Launching at 10:46am on October 21st, the exact time and date I was born. 

‘Each product is housed in opalescent packaging to celebrate my birthstone, the opal. Featuring a 10-Pan Pressed Powder Palette, a new Opalescent Gloss, newly formulated Semi-Matte Liquid Lipsticks, and Lip Liners. 

‘This collection is a combination of neutrals and pops of color suitable for everyday wear and glam nights out. I can’t wait for you guys to see how amazing these new products are! Shop the #Opalescent Collection on Wednesday, 10.21 at 10:46AM PT exclusively online at KKWBEAUTY.COM. 

Kim’s sculpted latex top accentuated her curves and she wore long silky extensions in her hair which were styled high in a youthful ponytail. 

For an extra playful touch the mother-of-four could be seen hurling a slice of birthday cake leaving her fingers covered in white frosting.