Aslett, who will officially start in her new position on 1 November, will Celebrity Cruises’ UK & Ireland trade sales strategy, nurturing the brand’s strong relationships with trade partners while strengthening its position within the premium cruise market.
She will report into the line's UK and Ireland Managing Director Claire Stirrup.
In the past 14 years, Aslett has held several positions at Celebrity, spanning sales leadership, trade and consumer marketing, trade support, training, partner engagement and business development.
The premium cruise line said: "Leigh brings a strong track record of driving commercial growth, strengthening strategic partnerships and delivering innovative trade programmes across the region.
"For the past two years, she has served as Head of Sales EMEA, leading commercial strategy and trade performance across continental Europe and the Middle East.
"During her time with Celebrity, Leigh has created and launched initiatives including Celebrity Central, a centralised trade platform, and the highly successful Celebrity for Beginners programme, helping educate and engage travel advisors across the region."
It added: "The new appointment highlights Celebrity’s ongoing commitment to the UK and Irish markets, and travel partners across the industry."