"This 2007 style is the true Miracle on 34th Street," she joked in the caption.
"People loved it, but it always felt a little personally compromising -- you want to be putting a better message out there," she said.
Her second single "Your Love's a Drug" was released in 2011.
Meester has also recorded songs for various soundtracks.
We caught up with the actor at the 2015 TCA Summer Press Tour earlier today, and he confessed that he hasn't had a chance yet to meet Lively and Ryan Reynolds' baby girl."I texted Blake when she had her baby and congratulated her and I look forward to the day when I finally get to say hello," he told us. There were some evenings during the shoot where I would go home and wasn't able to fully let go of stuff.
News about reuniting with his one-time co-star Chace Crawford, and now he's dishing all about Blake Lively's little one, James!
Two of our favorite television actors are living out a real-life crossover episode.
I think that “Gossip Girl” is one of – if not – my most beloved TV show ever.
Although when the last season’s final episode finished I felt both joy and great sadness.
Westwick also confessed that he hasn't caught up with Leighton Meester (who is pregnant with her first child with Adam Brody) in a short while, saying, "I haven't seen her lately, but I'm sure she's doing absolutely fine.
She's a great girl.", which premieres this fall on ABC, where he stars as Kent, a serial killer who made L. Westwick admitted that stepping into Kent's shoes was no easy feat, and one that has stuck with him long after his days on the set."I had nightmares shooting the pilot," Westwick said.