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She may be his fifth child, but Lance Armstrong couldn't be prouder of newborn daughter Olivia Marie.
The cyclist tweeted a picture of the month-old baby today, writing: 'Hanging poolside with a beautiful little lady.'
Her head laying on his chest, Olivia looked to be listening to her famous father's heartbeat.
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Despite her tender age, Olivia joined her parents and 17-month-old brother Maxwell Edward at the beach in Miami today.
Doting father Lance, 39, kept his precious youngster swaddled away from the sun in a protective blanket, keeping a close eye on son Maxwell as he played nearby.
The family unit was completed by their mother Anna Hansen, Lance's girlfriend of two years.
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Anna and Lance met through his work with the charity where she works, First Descents, a non-profit that works with cancer survivors.
Both babies were born after Lance's battle against testicular cancer - which saw him return to full health after an initially poor diagnosis.
Lance, a seven times winner of the Tour De France, also has three older children from his marriage to ex-wife Kristin Armstrong - twin daughters Isabelle and Grace, nine, and son, Luke, 11.
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Family day: Lance and his girlfriend Anna dressed for the sunny weather
source: dailymail