Selena Gomez is looking absolutely fire, literally.

On Tuesday, the Rare Beauty founder stepped out in London looking red-hot in an monochromatic ensemble.

From her lipstick to her toes, Gomez, 32, was covered in bright hues of the fiery shade while promoting her latest single, “Scared of Loving You” at a listening party for her just-announced album with fiancé Benny Blanco.

Styled by Erin Walsh, the singer draped herself in a bright red Milkwhite faux fur coat ($585) over a matching lady-like button-up dress.

The flow of red continued down to Gomez’s feet, which she covered with fire engine red pointed-toe pumps.

Even her nails were coated in the color—CND Shellac in shade Needles & Red, to be exact, as manicurist Tom Bachik told Allure on Monday. Her on-theme maroon mani blended in just enough to let her marquise diamond engagement ring shine.

The “Good For You” artist topped her London-look off with a chunky gold ring, gold statement earrings and, of course, a bright red Rare Beauty lipstick thanks to makeup artist Hung Vanngo.

She wore her hair in a sleek bob with a sweeping side part to the complete the look.

The “Only Murders in the Building” star’s entire glam squad showed off Gomez’s look on Instagram, where fans obsessed over it in the comments.

“Red is HER color,” one fan wrote. Another shared, “I loveeee red on her.”

Many fans also commented on Gomez’s new-found “glow” following her engagement to record producer Blanco, 36. Just last week, the couple opened up about how the pair landed on the marquise-style ring’s custom style.

“I just tried not to f—k up,” Blanco said during their chat with editor-in-chief Mel Ottenberg after Gomez stated, “that’s the diamond I’ve always dreamed of.”

In fact, she’s been dreaming of the design since writing her 2015 hit “Good For You,” which includes the lyrics “I’m on my marquise diamonds / I’m a marquise diamond.”

Blanco recalled, “She showed me designs and I would always throw little hints. I’d be like, “Yeah, but if I ever made one, would you want it like this?” 

He also revealed that he’s saving two diamonds that were meant to flank the solitaire and will turn them into earrings — perhaps as a first anniversary present?