Gregg Leakes died at his home on Wednesday after a battle with colon cancer.
The new host is stepping in after it was announced this week that Elaine Welteroth was leaving the show.
The reality star filed for divorce from the rapper in February.
ET confirmed the actors were dating last month.
Five acts moved on to the finals, sending six hopefuls home empty-handed.
The 'Bridgerton' star and his girlfriend sparkled at the star-studded event on Wednesday.
Andy Cohen, Eva Marcille and many more friends and Bravolebrities took to social media to share their condolences after Gregg's death.
The actress says it took about a year for writer-director Coke Daniels to convince her to join the production.
The 'Spider-Man' costars were recently photographed at a wedding together after being photographed kissing in July.
The doc will give fans a peek at the making of the Pepsi Super Bowl LV Halftime Show.
The actress says she wanted to see the Duchess of Cambridge in candid moments.
Kross turned 5 on Tuesday.
In the new promo for Young's season of 'The Bachelorette,' she literally shoots and scores as she makes her grand entrance.
'I will miss my talented co-hosts and crew and I wish them the very best,' Welteroth said in a statement to ET.
