Anastasia Karanikolaou launched a new clothing line with TJ Swim on Tuesday.
The 22-year-old best friend of Kylie Jenner has modelled the swimwear collection for the past several months, teasing it on both her Instagram page as well as TJ Swim's.
The blonde beauty - who has an impressive 6.3M Instagram followers - shared a fresh image on Wednesday as she was seen in a yellow two-piece while peeling a banana.
The day before, her bestie Kylie modelled one of her designs as well for a sizzling social media post.
Stassie came to fame when she started spending time with the Keeping Up With The Kardashians star earlier this year after Kylie stopped hanging out with Jordyn Woods after the Tristan Thompson/Khloe Kardashian cheating scandal.
The looker was also seen on Halloween with Kylie's half-brother Rob Kardashian as they left a club in West Hollywood.
In Anastasia's latest swim photo, she has on a light blue bikini.
The pinup - who goes by Stassie - is showing off the giveaway items TJ Swim was offering to a lucky winner.
'To celebrate my new @tjswim collection, we're giving you the chance to win the entire collection for you + your bestie!' she stated in the caption.
And she also talked to People about her swim line on Tuesday.
'I’m very picky with my swimwear and the designs that I think are flattering,' she said. 'For the line, I was very particular with how everything fit and designed it to be flattering on every body type, not just mine. I wanted everyone to feel and look good in it.'
She also said she prefers string bikinis.
And the star added that Kylie helped her with the line: 'We love to twin. It’s a cute, fun thing we started and now we just run with it. The twinning never stops!'
And she made Kylie try on her designs.
'I made all of my friends come for a ‘try-on party’ and test all the samples so I could see how it looked on each of my their bodies. I took everyone’s feedback and put it back into the designs and this is what we have now. The process was definitely a group effort and we collectively came up with it together. I’m really happy with how it came out.'
'We have a top that you can wear in multiple ways, which I think is really fun. We have our stringy bikini, which is my personal favourite and the bra top, which I think is a good staple, especially for girls who have bigger breasts.
'…. I made sure we made them in black because I feel my most confident when I’m in a black bikini — it’s just a good staple colour and I also love the pastel pink and blue and neon yellow because I feel like those look good on any skin tone,' she said.
Stassie made headlines in July when she was slammed for being too Photoshopped in a photo with Kylie.
She was in a blue velvet mini dress while Kylie was in a matching purple one while they were on vacation.
Critics say Karanikolaou's figure looks heavily edited. Her left leg was distorted and significantly smaller than her right. And her right leg looked fuzzy, which is a side effect of photo-editing apps.
Karanikolaou's left hip and left arm also seem oddly wavy.
Fans think that her body was edited to make Jenner's waist look smaller.
Jenner then took to social media to say that Stassie was 'beautiful inside and out.'