Katie Holmes, 47, brought her boyfriend, artist Jason Bard Yarmosky, 38, to designer Michael Kors's 45th-anniversary dinner in East Hampton, New York, on Thursday night. The outing marks a significant step in their relationship, coming weeks after Holmes and Yarmosky made their romance public on Instagram.

Holmes, dressed in a royal purple, ankle-length, draped dress, appeared smitten as Yarmosky mingled with her friends, including actresses Naomi Watts and Christie Brinkley. Yarmosky complemented Holmes in an all-black ensemble. Photos from the event were shared on Kors's Instagram account and reposted by Holmes.

For the starry occasion, Holmes wore a royal purple, ankle-length, draped dress

The couple, whose relationship became Instagram official last week, attended a Ferragamo pop-up event in Bridgehampton, New York, three weeks prior. When asked about their coordinated navy blue outfits at the time, Holmes told Elle magazine, "I think we just have similar taste."

Earlier in July, they were seen holding hands at the premiere of "The Invite" in East Hampton, with an eyewitness telling People that Yarmosky "was whispering in her ear, and she was laughing," and that they "seemed very easy together and there was a smile on her face all night."

The duo also posed alongside model Christie Brinkley

Holmes met Yarmosky in June at a Tribeca Festival dinner in New York City. Yarmosky, a native New Yorker, explores themes of "aging, time, and memory" in his artwork, according to his website. He earned a Bachelor of Fine Arts from the School of Visual Arts in New York in 2010.

Prior to her relationship with Yarmosky, Holmes dated musician Bobby Wooten III, chef Emilio Vitolo Jr., and actor Jamie Foxx. She is also the mother of Suri Cruise, 20, with her ex-husband Tom Cruise.