Children's apparel retailer OshKosh B'Gosh Inc on Tuesday reported a 25 per cent jump in first quarter net profit to $5.7 million from $4.5m in the year-ago period. The Wisconsin-based company said net sales for the period were $100.8m versus $99.4m, reflecting a 4.4 per cent gain in same-store sales offset by softer than anticipated wholesale results.