According to the rich list of entertainers under 30 put together by the newspaper, the singer songwriter is worth a total of £30m. The amount has risen from the £20m her fortune was valued at back in 2012.
Adele enjoyed a hugely successful last year with numerous awards bestowed on her for latest record 21 and her James Bond theme tune Skyfall.
Elsewhere there were a number of other new entries in the list including all five members of boy band One Direction. The group are now officially the richest boy band in Britain with a combined fortune of £25m.
The four members of JLS are narrowly behind with a combined worth of £24m.
Other new entries to the list include Emeli Sande and Ed Sheeran who both have fortunes valuing a total of £5m each.
Perhaps unsurprisingly, Sir Paul McCartney is the richest performer in the UK with a fortune of £680m which he shares with his latest wife Nancy Shevell.
He has been the wealthiest performer in the country since The Sunday Times Rich List began in 1989.
Llord Lloyd-Webber is second in the list with £620m while U2 and Sir Elton John are third and fourth with £520m and £240m respectively.
The 2013 Sunday Times Rich List is now in its 25th year.