She insists she hasn't had plastic surgery, but Kim Kardashian was undeniably defying gravity as she stepped out without a bra in New York last night.
A sheer panel in her grey and black dress displayed more than a hint of her abundant cleavage, which showed no sign of sagging.
While admitting to using Botox, the reality star has previously denied having a breast job, saying: 'Trust me honey, if I take this bra off you will tell me I need to get them done.'
Gravity defying: Kim Kardashian's curves need no support as she displays them in a transparent panel as she arrives for The Late Show With David Letterman in New York
Showing off her figure: Kim has been visiting the gym nearly every day after piling on the pounds
Kim's shapely figure showed the effects of her new exercise regime, having thrown herself into working out since Christmas.
She was accompanied by her sister as they arrived for an interview on the David Letterman show tonight, to promote their new show Kim and Kourtney Take New York.
The two girls then met up with their other halves, Scott Disick, who is the father of Kourtney's one-year-old baby son Mason, and Kim's new beau, New Jersey Nets star Kris Humphries, for dinner at Serefina.
New love: Kim is accompanied to dinner by her new boyfriend, New Jersey Nets basketball player Kris Humphries, who towered above his reality TV star lady
And while Kim, 30, braved the elements in her revealing dress, her sister covered up in a warm wool coat, complete with fur cuffs.
Her outfit was perhaps more suitable for the cold January day, with snow falling. Earlier the two had both been sensibly dressed as they landed at JFK Airport on a flight from Los Angeles.
Unlike Kim, Kourtney, 31, has been open about her use of surgery.
Different styles: While Kim went bare to display her dress, Kourtney wore a thick woollen coat, with fur cuffs
Arrival: Earlier in the day the pair had wrapped up warmly as they landed at JFK Airport from Los Angeles
'I have had breast implants, but it's so funny 'cause it's not a secret, I could care less,' she said in an interview last year.
And even their mother, Kris Jenner, has admitted resorting to the surgeon's knife.
'Nothing ever on my face,' the 55-year-old said when the family were interviewed on U.S. show Nightline last year.
'I've had my boobs done and that was 1988 and I had it done twice in the same year because the first one didn't work... I had some Botox.'
This morning the sisters continued their round of interviews with an interview on Regis & Kelly.
Interview round: This morning Kim made an appearance on Live With Regis and Kelly to promote her new show
Meanwhile their sister Kourtney's husband Lamar Odom has opened up to Playboy magazine about meeting his wife for the first time.
The NBA star said he was surprised by the 26-year-old reality star when they first met and they married just weeks after they met.
He said: 'I was kind of surprised at how intelligent she was. You don't know what to expect. Next thing I know I'm spending every day with her. We just hit it off.'
The Los Angeles Lakers star added that he's not worried about one of his sex tapes being released.
He said: 'We wouldn't have anything to be ashamed about, but, no, that's not going down.'
The couple will start filming their own reality show, Khloe & Lamar, later this year.
Sister act: The pair wore matching blush, with Kim in a dress and Kourtney in a skirt
