Duchess Kate wears another 'daring' neckline at garden party in Poland

Duchess Kate and Prince William ended the first day of their five-day tour of Poland and Germany on Monday by attending the Queen's Garden Birthday Party at the Orangery in Lazienki Park, where William delivered a speech in his grandmother's honor. Her Majesty turned 91 years old in April, so the celebration is a belated one.

SEE ALSO: Shy Prince George and smiley Princess Charlotte steal the show as royals arrive in Poland

The Duchess of Cambridge sported an A-line dress by Polish designer Gosia Baczynska, and it's the second time in a week that she's flaunting a "daring" neckline (not to mention that the Alexander McQueen suit the royal mom was seen deplaning in on Monday morning also featured a slightly deep V). The dress, which Express.co.uk is calling "unusual" and "abstract," is a far cry from the simpler styles and patterns Kate's known to wear more frequently.

The princess also opted to style her recently trimmed tresses in a low bun and accessorized with oversized pearl earrings.

See her garden party look below:

Hours earlier, Kate turned heads with a comment about having a third child after being given a gift for a newborn. Could a little brother or sister for George and Charlotte be on the horizon? Only time will tell!

See photos of the royal family arriving in Poland (with shy George and smiley Charlotte):