The 25-year-old walked the blue carpet at the Gibson Amphitheatre with her Jonas Brothers star husband Kevin, who kept an arm around her as they posed for photographs.
In another snap posted to Instagram by Kevin, gorgeous Danielle can be seen resting her hand protectively on her stomach.
Kevin wrote: "My baby is so beautiful."
Danielle and Kevin announced their first pregnancy in July, with Kevin tweeting: "It's true @daniellejonas is pregnant! Can't even imagine how excited we are. I can't wait to share this with my best friend. I love you baby."
The excited couple last week shared a sonogram picture of their unborn child, with Danielle saying: "I can't believe this is ours @kevinjonas and I are so blessed. Look at that cute nose!!!"
Danielle and Kevin married in New York in 2009 after meeting while on separate family holidays in the Bahamas.
And life just keeps getting better for these two as last night Kevin took home the prize for 'Choice Male Reality Star' for Married To Jonas, the E! reality show documenting his life with Danielle.
He tweeted afterwards: "Thank you for voting for the TCA's so happy to have won a board tonight thank you everyone! Best fans in the world."
More pictures from the Teen Choice Awards in our gallery below!
Copyright: WENN Nikki Nelson