Tiny Becky Eaves has become the youngest winner at the country's oldest club.
Rebecca, at just seven years, seven months and 16 days, won the nine and under 50m butterfly and 100m medley at the Brighton Championships at the Prince Regent.
Brighton club's spokesman Brian Smith: "Our club was formed in 1860, which makes us the oldest in the country, and it hasn't had a swimmer as young as Becky win a championship race in its existence.
"The fact she did it against girls up to two years older than she is shows she has a lot of promise."
The Eaves family collected seven titles in all.
Becky's ten-year-old sister Emma, a multi-county champion, secured the 12 and under 50m freestyle, 50m butterfly, 100m breaststroke, 100m backstroke and 100m individual medley titles.
Mum Angela said: "We were gobsmacked at how well Becky did as she is only knee high to a tadpole but, like Emma, she is a natural in the water. She's a little rascal, a character and a half. She saw Emma swimming and wanted to follow her."
Becky added: "It was quite embarrassing because when I won I could see myself on a massive screen."
The sisters attend Cottesmore St Mary's (Hove) and live in Portslade.
There were 25 club records with Claire Manton claiming seven of them in a meet in which she was unbeaten. Scott Walder set new times in all his six events at 17 and over. Chris Sutton broke six record in winning seven events. Hannah Belameh chalked up six victories.
Winners included: Nine and under: Sophia Marlow, Matthew Boxall, (3), Louisa Papanicola, Becky Eaves (2), Connor James. Ten and under: Hannah Belameh (6), Johnny Setterfield (2), Ziggy Tate (4). 12 and under: Emma Eaves (5, one record), Alex Sobolev (3), Tom Rooke (2, one record), Daniel Maggs (2), Isobel Rogers. Under-17s: Amy Kent (2, two records), Chris Sutton (7 wins, six records), Kirsty Hedge (1 win, one record). Claire Manton (7, seven records), Scott Walker (2, one club record). 17 and over: Scott Walder (6, six records).
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