Updated: Thu, 24 Oct 2013 14:45:00 GMT | By Lucy Mapstone
Thirty richest British celebrities under 30

28. Jessie J

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28. Jessie J - age 25 - worth £5.58m

Singer/songwriter Jessie J makes her first ever appearance on the Heat rich list, coming in at number 28. A couple of years starring on the UK version of The Voice have certainly helped boost her earnings, as well as her globally successful music career.