The best black and white spring racing dresses under $150.

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Spring Racing Carnival has a whole day dedicated towards a black-and-white dress theme. Derby Day is this Saturday and demand for monochrome frocks is off the charts.

For those not wanting to spend exorbitant amounts on their look, we’ve found some stunning frocks that will nail the theme without breaking the bank.

Mono Halter Mini Dress, Sportsgirl, $109.95.

We love a good print – not least of all because it will hide any accidental champagne spills during the day.

Alanis Strappy Jumpsuit, Portmans, $99.

A jumpsuit is a glamorous alternative to the usual dress options. Pair with a wide-brim hat and over-sized shades to channel Amal Clooney (because who doesn't want to do that at least once in their life).

Image: Portmans.

Dannii Minogue Petites Rib Bodycon Dress, Target, $39.

For less than the cost of most fascinators, what's not to like?

Image: Target.

Pretty Mono Dress, City Chic, $129.95.

We love the racer-back detailing on this sporty black and white frock.

Image: City Chic.

 RSVP Spliced Dress, Portmans, $119.95.

It's black. It's white. It has a saucy split. It's comfortable and can definitely be worn to work on Monday.

Image: Portmans.

Madeline Off The Shoulder Mini Dress, Forever New, $139.99.

It's short, cute, and those flared sleeves and heavy brocade fabric are the finishing touch.

Image: Forever New.

Heat of the Moment Dress, Cooper St on The Iconic, $149.95.

This is the perfect, flowy dress to be wearing for an all-day even like the races.

Image: Cooper St from The Iconic.

 Soraya black dress, BooHoo Plus, $40.00.

This is the ultimate bombshell black dress for race day, with a plunging necklace and fitted design.

Image: BooHoo.

 Some more spring racing inspiration... (Post continues after gallery.)

 Blossom Lace Off-the-Shoulder Dress, Atmos & Here on The Iconic, $119.95.

This Atmos & Here frock looks like it should be costing a heck of a lot more than just $119.95. Steal.

Image: Atmos & Here on The Iconic.

 So Fancy Dress, City Chic, $139.95.

With a soft V-neckline and super-femme lacy detailing, this pretty white dress is going to be a major staple for summer cocktail parties.

Image: City Chic.

 BooHoo Sequin Star Print Maxi Dress, ASOS, $70.00.

If you want to stand out from the crowd this race day, go for something a little wilder with this star-print maxi dress from BooHoo.

Image: BooHoo at ASOS.

Deep V Printed Dress, Witchery, $149.95.

Simple and making a statement, Witchery has given us a cool alternative to the traditional stripe.

Image: Witchery.

No More Time Midi Dress, Cooper St at Myer, $149.95

Black and white florals are so Betty Draper, right? We love the interesting cross-over design on the top.

Image: Cooper St at Myer.

 Cupid Lace Jumpsuit, Sheike, $59.00.

If Nadia Bartel and Jesinta Campbell showed us anything from this year's Brownlows, it's that a beautiful jumpsuit can outshine a fancy frock any day.

Image: Sheike.