Britney Spears has bought her pregnant sister a one-of-a-kind elephant - as a gift for her unborn baby. The pop star has reportedly ordered a six-foot tall custom-made elephant for 16-year-old Jamie Lynn, as part of a $30,000 (GBP15,000) nursery gift. Reports suggest Spears has commissioned the owners of trendy Los Angeles baby boutique Petit Tresor to design an ocean-themed nursery for her sister in Kentwood, Louisiana. An insider says, "It is going to have organic bedding and baby blankets... Britney's sparing no expense. "She also ordered a custom made, six-foot tall elephant with a blue bow which she wants to sit in the middle of the nursery." Jamie Lynn confirmed she was pregnant with boyfriend Casey Aldridge's baby in December (07).