Fab or flop: Selena Gomez's frumpy shoes, Jessica Alba's moto jacket and more

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Fab or Flop: Week of March 6
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Fab or flop: Selena Gomez's frumpy shoes, Jessica Alba's moto jacket and more

Flop: Karlie Kloss

We're all for showing some skin, but Karlie Kloss took it to a bizarre level in this strange red frock with a left breast-exposing circular cutout. (Photo by Marc Piasecki/GC Images)

Flop: Selena Gomez

The singer, 23, has developed a sexy, polished style through the years, but she took a few steps backward this week in a bizarre, layered outfit with strange proportions and frumpy footwear. Not your best, S! (Photo by Neil Mockford/Alex Huckle/GC Images)

Fab: Selena Gomez

That's more like it! The "Good For You" singer nailed it in a gorgeous, shimmery dress with a thigh-high slit and plunging neckline topped with a fun, fur-adorned bomber jacket. Super-sleek hair and glam makeup completed her killer look. (Photo by Marc Piasecki/GC Images)

Flop: Lara Stone

Yikes! The model looks like she was ready to join the cast of "Kinky Boots" in this red patent leather moto jumpsuit. (Photo by Marc Piasecki/GC Images)

Fab: Irina Shayk

Shayk kept in simple in a flirty red minidress in a sexy silhouette. (Photo by Pierre Suu/Getty Images)

Flop: Alessandra Ambrosio

Where in the world is Carmen Sandiego? That's all we could think about when we saw Alessandra Ambrosio's over-the-top ensemble. Love the hat, love the coat and love the boots, but all together, it's a total mess. (Photo by Timur Emek/GC Images)

Flop: Cassie

Cassie's matronly top and pearls totally clashed with her edgy moto jeans. (Photo by MPI616/Bauer-Griffin/GC Images)

Fab: Jessica Alba

Alba mixed girly and edgy perfectly in a pretty lace tea dress with a gray denim moto jacket on top. Metallic heels complemented the look. (Photo by Josiah Kamau/BuzzFoto via Getty Images)

Flop: Lily Aldridge

We actually really dig Aldridge's look here -- but the scarf belt and fringed details on her booties totally clash with the otherwise sleek look.  (Photo by Raymond Hall/GC Images)

Flop: Selena Gomez

The singer totally missed the mark in a teeny-tiny denim mini with strange, toe-exposing over-the-knee boots. (Photo by Marc Piasecki/GC Images)

Fab: Maria Menounos

The TV host wowed just hours after getting engaged in simple army pants, a white crop top and nude pumps.

 (Photo by Raymond Hall/GC Images)

Flop: Barbara Palvin

We might have been on board with the Hungarian model's look if she swapped her clunky boots for a sleeker heel. (Photo by Marc Piasecki/GC Images)

Flop: Hailey Baldwin

The model just looked visually busy in an semi-sheer embroidered dress, clunky gold heels and a massive headband. Bold red lipstick didn't help her case. (Photo by Marc Piasecki/GC Images)

Fab: Kate Hudson

Hudson was totally elegant in a gorgeous lunging Grecian gown, box clutch and dark purple lips. (Photo by Samir Hussein/WireImage)

Flop: Sacha Baron Cohen

We don't know about you, but we're so over the "Borat" actor's whole schtick -- and this complete cowboy look on his press tour is no exception. (Photo by Raymond Hall/GC Images)

Flop: Joe Jonas

Joe, Joe, Joe. While younger bro Nick has gone the simple route, Joe has totally gone off the deep end with his wacky style. (Photo by Neil Mockford/Alex Huckle/GC Images)

Fab: Brooklyn Beckham

The teenager looked his age -- but way chicer than the typical high schooler -- in black skinnies, white sneakers, a purple tee and navy bomber jacket. (Photo by Mark Robert Milan/GC Images)

Flop: Padma Lakshmi

We are all for flared denim making a comeback, but Lakshmi could have found a more flattering pair. (Photo by Alo Ceballos/GC Images)

Flop: Bella Hadid

The youngest Hadid sister was aiming for an edgy look, but the leather on leather on choker was a bit too much for our taste. (Photo by Marc Piasecki/GC Images)

Fab: Rosie Huntington Whiteley

The model looked sophisticated in a pair of black skinnies, a gray tee and simple gray topcoat.  (Photo by GVK/Bauer-Griffin/GC Images)

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Selena Gomez turned heads in a slew of sexy outfits in Paris this week, but she didn't always hit a high note.

The singer, 23, has totally developed a sexy, polished style through the years, but she took a few steps backward this week in a bizarre, layered outfit with strange proportions -- not to mention frumpy footwear. Not your best, S! Model Karlie Kloss also missed the mark in a bizarre red gown with a circular cutout that exposed her left bra top.

While many celebs went way too far this week in strange styles, others nailed it in stunning, simple looks. Jessica Alba mixed girly and edgy perfectly in a pretty lace tea dress with a gray denim moto jacket on top. Metallic heels complemented her monochromatic look. Kate Hudson was totally elegant in a gorgeous lunging Grecian gown, box clutch and dark purple lips.

See these looks and more in the slideshow above.

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