with their most matchy-matchy looks.

about Posey’s iconic style and what it was like to work withon the fan-favorite series. She said: “She’s definitely a legend. She has a really definitive sense of style. She came with a lot of ideas and was very collaborative and she was one of the first people to be cast… she’s really fun to fit.”

's latest outfit proves that seasonal dressing is a mere suggestion — not a rule.The "I Wanna Love You Forever" singer was seen attending the We Matter x Limitless Mental Health Dinner on Saturday, May 31, in Los Angeles, in a outfit that channeled gothic glam, despite summer being around the corner.For the event, the singer wore a black satin mini slip dress with lingerie-inspired lace trim around the bust, which featured a subtle dip that showed off a hint of Simpson's cleavage.

The 44-year-old paired the slip dress with black back seam stockings, pointed black patent leather boots, and a black feathered cropped jacket. Simpson further accessorized the edgy ensemble with rows of silver and gold bracelets, matching necklaces and a large turquoise stone ring worn on her right hand.Simpson has been experimenting with her style in recent weeks. The singer

, and looked dazzling — literally — for the occasion.

The fashion designer wore a plunging silver metallic maxi dress with a thigh high slit at the hip. Simpson paired the look with unexpected rustic elements and accessorized with an oxidized silver belt with turquoise stones that sat low on her hips. The belt matched the pendant detail at the dress' plunging neckline, as well as the other accessories she layered, which included necklaces, rings and earrings.“Do not attempt to purchase or use any illegal substances ashore, as you may be arrested and not allowed back on board,” the letter points out.

Since smoking of any kind is a major fire hazard on a cruise ship, Carnival is also reinforcing its smoking rules this summer and reminding passengers of the hefty fines that come with breaking them.“Smoking of any kind in undesignated areas such as staterooms and balconies is strictly prohibited. Smoking violations and any willful or negligent act of discharging or releasing any unauthorized items overboard will result in a $500 charge, per violation,” the cruise line’s letter explains.

But that fine isn’t the only fee smokers can face for not following the rules.“Additionally, reimbursement cost for damaged or destroyed Carnival property will be posted on the guest’s Sail & Sign account,” the cruise line adds.