Britney Spears shares throwback photo with ex Justin Timberlake to wish her sister on her birthday Apr 10, 2021 Britney Spears is celebrating her sister’s birthday with an epic throwback photo. Source: Thanks WIONews.com Share this:Click to share on Twitter (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Facebook (Opens in new window) Published in Cinema