Pippa Middleton just nailed maternity style with this shirt dress

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Although we've tried our best to update our work wardrobes for the humid weather we've been having of late, it's not the easiest task to find pieces that keep you cool and are office-appropriate at the same time. However, Pippa Middleton's shirt dress ticks all the boxes with the mum-to-be wearing the Ralph Lauren design while attending Wimbledon.

It's the Striped Linen Sundress and it's currently on sale, down from $245.00 to $174.99 which works out to about €198. Now let's be honest, that is far from cheap but then this is what you call an investment piece and you'll be able to wear it for many summers to come. Pippa attended Wimbledon yesterday with her brother James Middleton and we have to say she nailed the perfect summer outfit.

Pairing the dress with espadrilles and what seems to be Ray-Bans, it makes for the perfect, chilled-out summer ensemble. The good news is that if you don't want to spend that amount, there are similar pieces on the high-street although they may not stand the test of time like this designer piece.

According to reports, Pippa and her husband James Matthews are expecting their first child this autumn.

It's an exciting time for the Matthews family as Spencer, brother to James, and Vogue Williams are also expecting their first child with rumours suggesting their bundle of joy will arrive in August.