Kate Middleton works spring style in Topshop monochrome polka dot dress

Kate Middleton showed off her stunning spring style in a Topshop polka dot dress at the Warner Bros. Studios launch this morning.

The Duchess of Cambridge was on-trend in monochrome as she joined husband Prince William in Leavesden in Hertfordshire today.

The pregnant Duchess worked high-street fashion in the £38.00 dotty skater dress that nipped in at the waist to reveal her growing baby bump.

The mum-to-be opted for a simple monochrome colour palette, styling the bargain dress with a cropped black peplum jacket, box clutch and obligatory pumps.

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Catherine seemed to be wearing rather more make-up than usual, with her eyes lined with thick black kohl and her cheeks looking flushed with rosy blush.

Her locks were curled into a loose, wavy style and her natural, multi-dimensional lowlights shined in the sun.

The Duchess of Cambridge’s black-and-white look is the latest in a line of winning maternity fashion looks of late.

Earlier this week, pregnant Kate worked spring fashion at the weekend in a pastel Mulberry coat, before sporting a floral Erdem frock in the sun.

[Related: Kate Middleton wows in pastel Emilia Wickstead dress]

But it was her powder blue Emilia Wickstead frock that she wore to the National Gallery this week that many critics argued was her first ‘proper’ maternity look.

To check out all of the Duchess’ maternity looks, check out our gallery of her pregnancy style.

What do you think of Kate’s monochrome look? Let us know over on Twitter now.