Fab or flop: Lena Dunham's sheer shirt, Hailey Baldwin's velvet dress and more

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Fab or Flop: Week of June 5
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Fab or flop: Lena Dunham's sheer shirt, Hailey Baldwin's velvet dress and more

Flop: Lena Dunham totally missed the mark in a sheer T-shirt paired with frumpy pants in a matching print. 

(Photo by Bobby Bank/GC Images)

Fab: Hailey Baldwin stunned in a green velvet draped minidress, black patent leather booties and a messy bun. Edgy sunnies and a few chain chokers completed her ultra-cool ensemble.

(Photo by Alo Ceballos/GC Images)

Fab: Sarah Hyland totally nailed the sheer trend in high-waisted black culottes, a sheer lace top with a schoolgirl-esque white collar. White pumps and red lips completed her look.

 (Photo by Jon Kopaloff/FilmMagic)

Fab: We love this semi-sheer blue lace dress on Julie Berman! The actress looked ultra chic in the romantic, ruffled creation.

(Photo by Gabriel Olsen/Getty Images)

Fab: Karlie Kloss looked effortlessly chic in a form-fitting floral midi dress and sneakers.

(Photo by Alo Ceballos/GC Images)

Flop: Miss USA 2016 Deshauna Barber's radioactive green dress was both ill-fitting and displeasing to the eye.

(Photo by Michael Stewart/GC Images)

Flop: We're all for taking fashion risks, but Kristen Wiig's didn't pay off. The actress looked like she was wearing pajams in a silk printed jumpsuit.

(Photo by Steve Granitz/WireImage)

Fab: Wiig totally redeemed herself, though, in this vintage-looking gray and black shirtdress.

 (Photo by RB/Bauer-Griffin/GC Images)

Fab: Chloe Grace Moretz looked killer in a fun little miniskirt, black crop top and platform sandals. A simple black moto jacket completed her fab look.

 (Photo by Wilbur/Star Max/GC Images)

Flop: Karina Smirnoff dazzles on stage, but the dancer looked dull in a disappointing gray number and strange sandals.

(Photo by Andrew Toth/Getty Images)

Flop: Melissa McCarthy looked a bit mismatched in a green bucket hat, wild fringe scarf and sneakers.

(Photo by Wilbur/Star Max/GC Images)

Fab: Paula Patton looked edgy and chic in studded black jeans, booties and a leather moto jacket.

(Photo by Raymond Hall/GC Images)

Flop: Actress Lizzy Caplan looked a bit outdated in her feathered, embroidered long-sleeved gown.

(Photo by Gilbert Carrasquillo/FilmMagic)

Fab: Carrie Underwood stunned in a modern printed occasion perfect for summer

(Photo by Kevin Mazur/WireImage)

Flop: Zosia Mamet should have left her red head wrap at home!

(Photo by Taylor Hill/FilmMagic)

Fab: Sarah Jessica Parker looked absolutely lovely in a pretty black tea dress with sheer sleeves and embroidery.

(Photo by Mireya Acierto/Getty Images)

Fab: Krysten Ritter looked killer in a gorgeous and ornate red gown with exaggerated shoulder pads. Her dark locks complemented the fierce look perfectly.

(Photo by Anthony Harvey/Getty Images)

Flop: Mia Moretti totally missed the mark in a fanciful white dress with way-too-long sleeves and aggressive lace-up boots.

(Photo by Gilbert Carrasquillo/FilmMagic)

Fab: Nicky Hilton dressed up her baby bump with a fun printed minidress and studded espadrilles.

(Photo by Team GT/GC Images)

Flop: Bella Hadid failed to impress in acid-wash denim and a tacky-looking bomber jacket.

(Photo by Josiah Kamau/BuzzFoto via Getty Images)

Fab: Chrissy Teigen looked totally refined and sophisticated in distressed denim, a beige knit top and chic blazer.

(Photo by Josiah Kamau/BuzzFoto via Getty Images)

Fab: Gigi Hadid looked perfectly sporty chic in white slacks, sneakers and a navy tank.

(Photo by Josiah Kamau/BuzzFoto via Getty Images)

Flop: We'll give Lena Dunham props for creativity, but we can't say we're totally pro bunny slippers on the red carpet.

(Photo by Taylor Hill/FilmMagic)

Fab: Elizabeth Banks nailed it in a simple sequined slip dress, choker and sandals.

 (Photo by Karwai Tang/WireImage)

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Summer is here, which means celebs are getting creative with sexy, skin-baring ensembles. While some looks are totally hits -- others are complete misses.

Lena Dunham turned heads this week in a bizarre, frumpy look that consisted of a sheer shirt and low-waisted, loose-fitting pants in a matching print. Mismatched red flats and a green plaid bag completed her confused ensemble. Sheer tops can work great, though, when paired with chic, demure pieces. Sarah Hyland totally nailed the sheer trend this week in high-waisted black culottes, a sheer lace top with a schoolgirl-esque white collar. White pumps and red lips completed her look. (Similar top here, culottes here.)

Day-to-night looks are perfect for summer. While sheer looks are great both day and night, Hailey Baldwin put a spotlight on another way to accomplish the task. The model donned a velvet evening dress while out and about in NYC this week. Paired with a messy bun, casual booties and sunnies, the more formal frock translated perfectly under the sun. (Similar dresses here and here.)

Click through the slideshow to see the best and worst dressed celebs of the week!

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