Kristin Cavallari, the 37-year-old reality TV star, has unveiled a sultry new campaign for her Hard Feelings fragrance, showcasing her sizzling chemistry with boyfriend Mark Estes.

The blonde bombshell and her 13-years-younger beau star in a steamy commercial for the new scent, which is the first fragrance from her lifestyle brand, Uncommon James.

“I’m thrilled to launch our first fragrance, which embodies the duality of soft femininity and strong masculinity,” Cavallari said, describing the scent as “sexy, moody, and complex.”

The entrepreneur and TV personality emphasized the importance of transparency in the beauty industry, stating, “I wanted to know what ingredients were in the fragrances I was using, but struggled to find a brand that offered that level of transparency.”

The scent features top notes of pink pepper and bergamot, a heart blend of rose, hibiscus, incense, and tobacco, and base notes of atlas cedarwood, sandalwood, and upcycled orcanox.

‘I’m thrilled for it to be our first fragrance. It’s sexy, moody, complex and embodies the duality of soft femininity and strong masculinity,’ founder and CEO Cavallari told DailyMail.com

Hard Feelings is a clean, vegan, and gluten-free fragrance that is free from parabens, petrolatum, phthalates, and colorants. It is available in 50mL for $72 at uncommonjames.com.

Cavallari and Estes, a Montana Boyz member, have been dating for some time and have faced criticism for their 13-year age gap. However, the reality star has insisted that her boyfriend is not a “typical 24-year-old” and that their relationship works despite their age difference.

The entrepreneur and TV personality is also a mother of three, and her children are doing great. An insider revealed earlier this year that Cavallari is “the happiest she’s ever been” thanks to her relationship with Estes.