Britney Spears is reportedly set to adopt Chinese twins.The troubled singer - who recently lost custody of her two sons, Sean Preston, two, and 14-month-old Jayden James, to ex-husband Kevin Federline - is allegedly in the final stages of talks with an agency about adopting the six-year-olds.Friends claim Britney - who has three supervised visits with Sean and Jayden a week - is desperate to fill the void in her life since she lost the boys and believes opening her home to the disadvantaged youngsters will give her life new purpose.A source said: "She misses her boys terribly and needs them in her life. She thinks adopting the twins is the perfect solution."The 'Gimme More' singer - who was ordered by a judge to undergo random drug tests to prove she's a suitable mother - is also said to be planning her own funeral.Britney, 25, is so concerned her unhealthy lifestyle will eventually take its toll so has splashed out £25,000 (US $ 50 thousand) in case she ends up in an early grave.A friend added: "Adoption and a funeral? They two don't exactly go hand-in-hand."Paying for a funeral is a sensible thing to do - but not when you're only 25! It's a case of too much, too soon with Britney."Earlier this month, Britney was banned from driving with Sean and Jayden and her court-ordered parenting coach recently slammed her mothering skills, saying her household: "Ranged from chaotic to almost somber with no communication at all."