Winnie Harlow celebrated her 28th birthday in a see-through outfit covered in crystals

• Fashion model and Cay Skin founder Winnie Harlow turns 28 on Thursday.
• She attended an early birthday party on Monday night while wearing a daring, sheer look from GCDS.
• The rainbow-print set also had a flower-shaped cutout on its pants and crystal embellishments.

Winnie Harlow celebrated her 28th trip around the sun this week, and she basically wore her birthday suit.

The model was photographed outside Delilah, a 1920s-themed restaurant in Los Angeles, California, where she attended her birthday party on Monday night.

She was dressed in a two-piece, see-through set from the Italian fashion line GCDS, and the multicolored look was both daring and perfectly festive.

It included a crystal-covered halter bralette, which she wore with nothing underneath, and matching pants decorated with a flower-shaped cutout and the same crystal pieces at the bottom of each leg. She also wore a metallic thong underneath that blended with her skin.

Harlow's outfit is currently sold out on the GCDS website, though her pants previously retailed for $885.

She completed the outfit with baby-blue stilettos, chunky bangle bracelets, a silver Chanel purse, oversized hoop earrings, sunglasses with tinted lenses, and sparkling hair embellishments.

The colorful outfit comes weeks after Harlow wore a similar sheer look in more neutral shades.

She was spotted in Los Angeles on June 7 wearing a cream-colored mesh gown that showed her skin and undergarments.

She also wore a cropped blazer, delicate jewelry, and white Chanel sneakers with crystal embellishments.

Harlow's actual birthday isn't until Thursday, but the Cay Skin founder has been celebrating since the start of the week.

"Welcome to LEO SEASON ????????," she captioned an Instagram post featuring photos and videos of her wearing a flowing, yellow gown.