The pregnant singer and American Idol judge was spotted hanging out on Sunday with her fiancé on Butterfly Beach in Montecito, California.
The couple, who are expecting their first child together, were seen lounging around with a number of friends -- all seated a good distance from other beachgoers.
Bloom was spotted spending some time riding a motor-powered surfboard while Perry, displaying her baby bump in a floral print maternity swimsuit, relaxed on the sand under a big hat and dark shades.
Meanwhile, Bloom's ex-wife, Miranda Kerr -- with whom the actor shares a 9-year-old son, Flynn -- spent the holiday reading to her children with husband Evan Spiegel, 2-year-old Hart and 7-month-old Myles.
Demi Lovato also spent Memorial Day weekend with her handsome beau, Max Ehrich, and posted a sweet snapshot of herself and her man hanging out in their swimwear as he gives her a kiss.
"I now spend my days in a bathing suit with no makeup with someone who accepts and loves me for who I am, flaws and all," Lovato wrote on the pic, which she shared to her Instagram story. "I love you @maxehrich."