Meghan Markle's wedding to Prince Harry last May was a star-studded affair, and her baby shower Wednesday in New York City proved no different.

Amal Clooney and Serena Williams were reported to be the co-hosts of Meghan's private baby shower reportedly held at the Mark Hotel on New York's Upper East Side.

Amal Clooney arrives at the baby shower for Meghan, the Duchess of Sussex, in New York, Feb. 20, 2019.(Kristin Callahan/ACE Pictures/Shutterstock) Amal Clooney arrives at the baby shower for Meghan, the Duchess of Sussex, in New York, Feb. 20, 2019.

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Meghan's close friends designer Misha Nonoo, actress Abigail Spencer stylist Jessica Mulroney and makeup artist Daniel Martin, who did Meghan's wedding makeup, were spotted entering the five-star hotel Wednesday.

Fashion designer Misha Nonoo arrives for the baby shower for Meghan, Duchess of Sussex, Feb. 20, 2019, in New York.(Kevin Hagen/AP) Fashion designer Misha Nonoo arrives for the baby shower for Meghan, Duchess of Sussex, Feb. 20, 2019, in New York.
Jessica Mulroney arrives for the baby shower for Meghan, Duchess of Sussex, , Feb. 20, 2019, in New York.(Kevin Hagen/AP) Jessica Mulroney arrives for the baby shower for Meghan, Duchess of Sussex, , Feb. 20, 2019, in New York.

Martin posted a photo on Instagram of baby-themed cookies from the shower, writing, "Such an incredible day celebrating #babylove."

(MORE: Meghan Markle spotted in New York City ahead of her baby shower)

"CBS This Morning" anchor Gayle King and fitness guru Taryn Toomey were also among the guests photographed entering the Mark Hotel, both carrying gift bags.

Gayle King arrives at the baby shower for Meghan, Duchess of Sussex, in New York, Feb. 20, 2019.(Carlo Allegri/Reuters) Gayle King arrives at the baby shower for Meghan, Duchess of Sussex, in New York, Feb. 20, 2019.

In addition to the high-profile guests, photographers also caught baby shower-friendly items like cotton candy machines and a harp being brought into the hotel Wednesday.

The Duchess of Sussex, 37, was seen cradling her bump and surrounded by security when she left the Mark Hotel Tuesday for an outing with Spencer, her former "Suits" costar.

Meghan Markle out and about in New York, Feb. 19, 2019. Pictured: Meghan MarkleRef: SPL5065556 190219 NON-EXCLUSIVEPicture by: Jackson Lee / SplashNews.comSplash News and PicturesLos Angeles: 310-821-2666New York: 212-619-2666London: 0207 644 7656Milan: 02 4399 8577photodesk@splashnews.comWorld Rights, No Portugal Rights(Jackson Lee /Splash News) Meghan Markle out and about in New York, Feb. 19, 2019. Pictured: Meghan Markle Ref: SPL5065556 190219 NON-EXCLUSIVE Picture by: Jackson Lee / SplashNews.com Splash News and Pictures Los Angeles: 310-821-2666 New York: 212-619-2666 London: 0207 644 7656 Milan: 02 4399 8577 photodesk@splashnews.com World Rights, No Portugal Rights

Meghan, who is due this spring, arrived in New York City from London last Friday. She is expected to depart New York City for London soon after the baby shower.

(MORE: George Clooney slams 'frustrating' coverage of Meghan Markle, compares it to treatment of Princess Diana)

Meghan and Harry, the Duke and Duchess of Susssex, kick off a three-day official visit to Morocco on Saturday.