BBCPictures of the Princess of Wales at a Remembrance event in London feature on several of Sunday's front pages. The Sun says Catherine was beaming as she made a "radiant return" at the Royal Albert Hall following her treatment for cancer."Brave Kate returns to work" is the headline on the front page of the Sunday Express. The paper says the princess has several official trips overseas lined up with the Prince of Wales in the new year as the princess eases her way back into public life. Meanwhile, the Observer reports that Chancellor Rachel Reeves will make the case for free trade between nations during a keynote speech this week. The paper says the issue puts the government on "direct collision course" with President-elect Donald Trump, who has promised to put tariffs on all imports into the US. Ports and supermarkets could be targeted by farmers who are threatening to protest over tax increases, the Sunday Telegraph reports. The paper says the chancellor's plans to place a 20% inheritance tax on farmers' assets worth more than £1m have received fierce backlash. The decision has fuelled fears ordinary family farms will be forced out of business, it adds. Reeves is also coming under pressure to rethink her plans to raise £25bn through higher employer national insurance contributions, the Times says, as 200 business leaders are calling on her to water down the tax rise. The paper reports that supermarkets and restaurant chains are being hit particularly hard, with Tesco facing a £1bn increase on its national insurance bill.The Daily Mail reports on calls for Prince Andrew to reveal "secret sources of funding" which the paper says are "bankrolling his stay at Royal Lodge in Windsor". Earlier this year the prince reportedly received written notice that the King would cut him off financially if he refused to move into more modest accommodation.And lastly, the Star on Sunday warns of a "festive crisis" as grottos across the country are facing a Father Christmas shortage. "Ho, ho, NO!" the paper exclaims.