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Kate Middleton, Organic Rosehip Oil

Chris Jackson/Getty Images

Everything's coming up roses for Kate Middleton, especially in the skincare department!

The soon-to-be mother of two royal babies has reportedly been using Trilogy's all-natural rosehip oil (the product contains essential fatty acids and is said to reduce signs of aging and dark spots) to keep her skin fresh and supple, which is all the more necessary since Kate has given up her weekly St. Tropez spray tanning indulgence, as US Weekly was first to note. Middleton has instead been using the DHA-free Bobbi Brown Shimmer Brick to warm her complexion.

Despite the spray tan ban, the expectant duchess has been stepping out with her signature glow: On March 9, she made an appearance with Prince William, Prince Charles and other members of the royal family for an event to mark Commonwealth Day in Britain. Kate looked incredibly chic in a pale pink Alexander McQueen frock coat, satin Prada pumps and a woven fascinator by Jane Taylor Millinery.

Catherine Duchess of Cambridge, Kate Middleton

Ben Cawthra/Sipa USA

The duchess has been appearing at various events lately, putting her growing baby bump on display in clingy wrap dresses—like the printed Erdem confection she sported to a lunch engagement at The Goring Hotel in London on March 2 (she paired the look with her oft-worn navy suede pumps).

And Kate has an exciting outing to come this week: On March 12, she'll be visiting the London set of Downton Abbey, where she'll watch a scene being filmed in the servants' quarters. An official photograph with the cast will follow—and yep, we're already anticipating the stylish duds the duchess will undoubtedly be wearing.

Love all things royal? The Royals premieres on Sunday, March 15 at 10/9c on E! Follow The Royals on Twitter and Facebook for the latest updates!