Fab or flop: Kendall Jenner's bralette, Rita Ora's jumpsuit and more

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Fab or Flop: Week of July 31
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Fab or Flop: Week of July 31

Flop: Iranian reality star Janina Youssefian hit the "Sharknado - The 4th Awakens" premiere in Berlin in this barely-there caged number that, like the film, offered a lot of shock factor but no substance. At least her tacky accessories kept with the outfit's overall theme ...

 (Photo by Matthias Nareyek/Getty Images for NBC)

Fab: Victoria Beckham was chic and sophisticated in a simple midi dress with an '80s-inspired print. Nude sandals, black sunnies and a black bag completed her elegant ensemble.

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

Flop: Kendall Jenner had a little too much going on in a sheer top that exposed a Givenchy bralette, over-the-top ripped jeans and green pointed-toe booties.

(Photo by BG001/Bauer-Griffin/GC Images)

Fab: Diane Kruger nailed street style in distressed denim, a striped tee, leopard flats and a green bag.

 (Photo by Josiah Kamau/BuzzFoto via Getty Images)

Flop: Rita Ora brought the '80s back -- in a bad way -- when she stepped out in a purple paratrooper jumpsuit with gold zippers.

(Photo by Josiah Kamau/BuzzFoto via Getty Images)

Fab: Margot Robbie was a classic beauty in a billowy two-tone printed gray Altuzarra shirtdress, black sandals and feathery waves. (Similar style here.)

(Photo by James Devaney/GC Images) 

Flop: Kim Kardashian missed the mark in outrageously impractical thigh-high lace-up boots while running errands.

(Photo by BG001/Bauer-Griffin/GC Images)

Fab: Diane Kruger flaunted her fit physique in a gorgeous black and white Mugler cocktail dress with wavy, cutout details and industrial studs. (Similar style here.)

(Photo by Ray Tamarra/GC Images)

Flop: Hayden Panettiere's fringed booties and fringed jacket added up to a bit of a mess.

(Photo by Alo Ceballos/GC Images)

Fab: Constance Jablonski kept the fringe to a minimum with a fun little crossbody bag -- and paired it with a pair of simple, breezy shorts and minimalist sneakers. (Similar shorts here.)

 (Photo by Alo Ceballos/GC Images) 

Flop: Sharon Stone looked sloppy in pajama-esque pinstripe pants, flat sandals and a loose-fitting black tee.

 (Photo by BG002/Bauer-Griffin/GC Images)

Fab: Adorable! Kelsea Ballerini was all smiles in a flirty black two-piece set with fun floral embroidery. 

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

Flop: Debra Messing missed the mark in an ill-fitting white gown and clunky gold accessories.

(Photo by Sylvain Gaboury/Patrick McMullan via Getty Images)

Fab: Rita Ora was totally schoolgirl-chic in an immaculate white minidress with a big black bow at the collar. Platform sandals and a flirty ponytail completed her look. (Similar dress here.)

(Photo by Robert Kamau/GC Images) 

Flop: Cara Delevingne petite frame was totally swallowed by her hankerchief-adorned minidress and thigh-high suede boots.

 (Photo by James Devaney/GC Images)

Fab: Lady Gaga turned heads in an edgy all-black ensemble with ultra-cool accessories like a thick black cuff, white hat and black choker.

(Photo by Josiah Kamau/BuzzFoto via Getty Images)

Flop: Mel B flaunted her fit physique in a form-fitting purple catsuit with a plunging neckline and bell bottoms -- and while she looks great, we're not totally on board with the catsuit revival quite yet.

(Photo by Jon Kopaloff/FilmMagic)

Fab: Actress Abigail Spencer donned a fun purple midi skirt with a black tee and sparkly pumps. (Similar skirt here.)

(Photo by Gregg DeGuire/WireImage)

Flop: Cara Delevingne looked over-the-top in an edgy, goth-inspired red collared minidress, sheer thigh-high tights and flat shoes that might have been better suited for the fall or winter.

(Photo by Josiah Kamau/BuzzFoto via Getty Images)

Fab: Lady Gaga stunned in a unique look that consisted of a striking black gown and vintage-looking flat-brimmed hat. (Similar hat here.)

(Photo by Raymond Hall/GC Images) 

Flop: Actress Yolonda Ross's exposed bra top erred on the tacky side and didn't match the rest of her chic look.

 (Photo by Jim Spellman/WireImage)

Fab: Actress Leven Rambin stunned in a chic navy and black trumpet dress with white lace details.

(Photo by Mireya Acierto/FilmMagic)

Flop: "Fuller House" star Jodie Sweetin rocked a cool braided hairdo that we adored, but the dress didn't seeem to fit her figure properly. (Photo by Steve Granitz/WireImage)

Fab: Kristin Cavallari showed off her toned games in a super short sage romper and printed pumps from her collection with Chinese Laundry. (Similar romper here.)

(Photo by Noel Vasquez/Getty Images)

Fab: She's not a teen, but Jessica Alba hit the Teen Choice Awards on Sunday in Los Angeles and looked incredible in a scalloped crop top and a set of high-waisted black slacks. The look was equal parts flirty and sophisticated. Way to show the kiddos how it is done!

 (Photo by Frazer Harrison/Getty Images)

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As always, last week's premieres, red carpets and celebrity sightings yielded both stunning and cringe-worthy fashions.

Iranian reality star Janina Youssefian hit the "Sharknado - The 4th Awakens" premiere in Berlin in this barely-there caged number that, like the film, offered a lot of shock factor but no substance. At least her tacky accessories kept with the outfit's overall theme ...

SEE ALSO: Social Scene: Week of Aug. 7

Kendall Jenner also had a little too much going on in a sheer top that exposed a Givenchy bralette, over-the-top ripped jeans and green pointed-toe booties. Meanwhile, Rita Ora brought the '80s back -- in a bad way -- when she stepped out in a purple paratrooper jumpsuit with gold zippers.

On the flip side, Victoria Beckham was one of the week's winners in a chic and sophisticated in a simple midi dress with an '80s-inspired print. Nude sandals, black sunnies and a black bag completed her elegant ensemble.

See the best and worst dressed celebrities of the week of Aug. 1 in the slideshow above.

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