Rachel Riley has shared some never-before-seen throwback photos with her Twitter followers on Tuesday, just one day after announcing the arrival of her second daughter, Noa.Exclusive: Rachel Riley talks family life with Pasha KovalevAhead of appearing on BBC Celebrity Antiques Road Trip this week, the Countdown host uploaded a series of snaps, showing some behind-the-scenes action with her husband Pasha Kovalev.WATCH: Rachel Riley thrills fans with surprise announcement"This was so much fun to