People News Reese Witherspoon and Ryan Phillippe mark daughter Ava's 18th birthday on Instagram 09/11/2017 Reese Witherspoon took to Instagram over the weekend to wish her daughter Ava a happy 18th birthday. Read More RELATED NEWS From Tokyo to Las Vegas: Taylor Swift's flight to Super Bowl LVIII'Chucky' Season 3 trailer released by USA Network and Syfy'Quantum Leap' Season 2 visits L.A. riots, Salem Witch Trials, and more TAGS: Reese Witherspoon Ryan Phillippe